Taken from http://www.typelogic.com/
Profile: INTP
Revision: 2.2
Date of Revision: 7 Dec 99
Precise about their descriptions, INTPs will often correct others (or be sorely tempted to) if the shade of meaning is a bit off. While annoying to the less concise, this fine discrimination ability gives INTPs so inclined a natural advantage as, for example, grammarians and linguists.
INTPs are relatively easy-going and amenable to most anything until their principles are violated, about which they may become outspoken and inflexible. They prefer to return, however, to a reserved albeit benign ambiance, not wishing to make spectacles of themselves.
A major concern for INTPs is the haunting sense of impending failure. They spend considerable time second-guessing themselves. The open-endedness (from Perceiving) conjoined with the need for competence (NT) is expressed in a sense that one's conclusion may well be met by an equally plausible alternative solution, and that, after all, one may very well have overlooked some critical bit of data. An INTP arguing a point may very well be trying to convince himself as much as his opposition. In this way INTPs are markedly different from INTJs, who are much more confident in their competence and willing to act on their convictions.
Mathematics is a system where many INTPs love to play, similarly languages, computer systems--potentially any complex system. INTPs thrive on systems. Understanding, exploring, mastering, and manipulating systems can overtake the INTP's conscious thought. This fascination for logical wholes and their inner workings is often expressed in a detachment from the environment, a concentration where time is forgotten and extraneous stimuli are held at bay. Accomplishing a task or goal with this knowledge is secondary.
INTPs and Logic -- One of the tipoffs that a person is an INTP is her obsession with logical correctness. Errors are not often due to poor logic -- apparent faux pas in reasoning are usually a result of overlooking details or of incorrect context.
Games NTs seem to especially enjoy include Risk, Bridge, Stratego, Chess, Go, and word games of all sorts. (I have an ENTP friend that loves Boggle and its variations. We've been known to sit in public places and pick a word off a menu or mayonnaise jar to see who can make the most words from its letters on a napkin in two minutes.) The INTP mailing list has enjoyed a round of Metaphore, virtual volleyball, and a few 'finish the series' brain teasers.
INTPs in the main are not clannish. The INTP mailing list, with a readership now in triple figures, was in its incipience fraught with all the difficulties of the Panama canal: we had trouble deciding on:
In seasons of low energy level, or moments of single-minded concentration, the INTP is aloof and detached in a way that might even offend more relational or extraverted individuals.
If Thinking can desist, the INTP is free to brainstorm, calling up the perceptions of the unconscious (i.e., intuition) which are mirrored in patterns in the realm of matter, time and space. These perceptions, in the form of theories or hunches, must ultimately defer to the inner principles, or at least they must not negate them.
Intuition unchained gives birth to play. INTPs enjoy games, formal or impromptu, which coax analogies, patterns and theories from the unseen into spontaneous expression in a way that defies their own comprehension.
The internalizing nature of the INTP's Sensing function leaves a relative absence of environmental awareness (i.e., Extraverted Sensing), except when the environment is the current focus. Consciousness of such conditions is at best a sometime thing.
Profile: INFP
Revision: 2.2
Date of Revision: 7 Dec 99
"I remember the first albatross I ever saw. ... At intervals, it arched forth its vast archangel wings, as if to embrace some holy ark. Wondrous flutterings and throbbings shook it. Though bodily unharmed, it uttered cries, as some king's ghost in super natural distress. Through its inexpressible, strange eyes, methought I peeped to secrets not below the heavens. As Abraham before the angels, I bowed myself..." --(Herman Melville, Moby Dick)
INFPs never seem to lose their sense of wonder. One might say they see life through rose-colored glasses. It's as though they live at the edge of a looking-glass world where mundane objects come to life, where flora and fauna take on near-human qualities.
INFP children often exhibit this in a 'Calvin and Hobbes' fashion, switching from reality to fantasy and back again. With few exceptions, it is the NF child who readily develops imaginary playmates (as with Anne of Green Gables's "bookcase girlfriend"--her own reflection) and whose stuffed animals come to life like the Velveteen Rabbit and the Skin Horse:
"...Generally, by the time you are Real, most of your hair has been loved off, and your eyes drop out and you get loose in the joints and very shabby. But these things don't matter at all, because once you are Real you can't be ugly, except to people who don't understand..." (the Skin Horse)
INFPs have the ability to see good in almost anyone or anything. Even for the most unlovable the INFP is wont to have pity.
Rest you, my enemy,
Slain without fault,
Life smacks but tastelessly
Lacking your salt!
Stuck in a bog whence naught
May catapult me,
Come from the grave, long-sought,
Come and insult me!."
--(Steven Vincent Benet, Elegy for an Enemy)
Their extreme depth of feeling is often hidden, even from themselves, until circumstances evoke an impassioned response:
"I say, Queequeg! Why don't you speak? It's I--Ishmael." But all remained still as before. ... Something must have happened. Apoplexy!
... And running up after me, she caught me as I was again trying to force open the door. ... "Have to burst it open," said I, and was running down the entry a little, for a good start, when the landlady caught me, again vowing I should not break down her premises; but I tore from her, and with a sudden bodily rush dashed myself full against the mark."--(Melville, Moby Dick)
Of course, not all of life is rosy, and INFPs are not exempt from the same disappointments and frustrations common to humanity. As INTPs tend to have a sense of failed competence, INFPs struggle with the issue of their own ethical perfection, e.g., perfo rmance of duty for the greater cause. An INFP friend describes the inner conflict as not good versus bad, but on a grand scale, Good vs. Evil. Luke Skywalker in Star Wars depicts this conflict in his struggle between the two sides of "The Force." Although the dark side must be reckoned with, the INFP believes that good ultimately triumphs.
Some INFPs have a gift for taking technical information and putting it into layman's terms. Brendan Kehoe's Zen and the Art of the Internet is one example of this "de-jargoning" talent in action.
INFPs live primarily in a rich inner world of introverted Feeling. Being inward-turning, the natural attraction is away from world and toward essence and ideal. This introversion of dominant Feeling, receiving its data from extraverted intuition, must be the source of the quixotic nature of these usually gentle beings. Feeling is caught in the approach- avoidance bind between concern both for people and for All Creatures Great and Small, and a psycho-magnetic repulsion from the same. The "object," be it homo sapiens or a mere representation of an organism, is valued only to the degree that the object contains some measure of the inner Essence or greater Good. Doing a good deed, for example, may provide intrinsic satisfaction which is only secondary to the greater good of striking a blow against Man's Inhumanity to Mankind.
Extraverted intuition faces outward, greeting the world on behalf of Feeling. What the observer usually sees is creativity with implied good will. Intuition spawns this type's philosophical bent and strengthens pattern perception. It combines as auxiliary with introverted Feeling and gives rise to unusual skill in both character development and fluency with language--a sound basis for the development of literary facility. If INTPs aspire to word mechanics, INFPs would be verbal artists.
Sensing is introverted and often invisible. This stealth function in the third position gives INFPs a natural inclination toward absent- mindedness and other-worldliness, however, Feeling's strong people awareness provides a balancing, mitigating effect. This introverted Sensing is somewhat categorical, a subdued version of SJ sensing. In the third position, however, it is easily overridden by the stronger functions.
The INFP may turn to inferior extraverted Thinking for help in focusing on externals and for closure. INFPs can even masquerade in their ESTJ business suit, but not without expending considerable energy. The inferior, problematic nature of Extraverted Thinking is its lack of context and proportion. Single impersonal facts may loom large or attain higher priority than more salient principles which are all but overlooked.
Famous INFPs:
Homer
Virgil
Mary, mother of Jesus
St. John, the beloved disciple
St. Luke; physician, disciple, author
William Shakespeare, bard of Avon
Henry Wadsworth Longfellow (Evangeline)
A. A. Milne (Winnie the Pooh)
Laura Ingalls Wilder (Little House on the Prairie)
Helen Keller, deaf and blind author
Carl Rogers, reflective psychologist, counselor
Fred Rogers (Mister Rogers' Neighborhood)
Dick Clark (American Bandstand)
Donna Reed, actress (It's a Wonderful Life)
Jacqueline Kennedy Onasis
Neil Diamond, vocalist
Tom Brokaw, news anchor
James Herriot (All Creatures Great and Small)
Annie Dillard (Pilgrim at Tinker Creek)
James Taylor, vocalist
Julia Roberts, actress (Conspiracy Theory, Pretty Woman)
Scott Bakula (Quantum Leap)
Terri Gross (PBS's "Fresh Air")
Amy Tan (author of The Joy-Luck Club, The Kitchen God's Wife)
John F. Kennedy, Jr.
Lisa Kudrow ("Phoebe" of Friends)
Fred Savage ("The Wonder Years")
Fictional INFPs:
Anne (Anne of Green Gables))
Calvin (Calvin and Hobbes)
Deanna Troi (Star Trek - The Next Generation)
Wesley Crusher (Star Trek - The Next Generation)
Doctor Julian Bashir (Star Trek: Deep Space 9)
Bastian (The Neverending Story)
E.T.: the ExtraTerrestrial
Doug Funny, Doug cartoons
Tommy, Rug Rats cartoons
Rocko, Rocko's Modern Life cartoons