My favorite passages from The Denial of Death by Ernest Becker:
Take stock of those around you and you will […] hear them talk in precise terms about themselves and their surroundings, which would seem to point to them having ideas on the matter. But start to analyse those ideas and you will find that they hardly reflect in any way the reality to which they appear to refer, and if you go deeper you will discover that there is not even an attempt to adjust the ideas to this reality. Quite the contrary: through these notions the individual is trying to cut off any personal vision of reality, of his own very life. For life is at the start a chaos in which one is lost. The individual suspects this, but he is frightened at finding himself face to face with this terrible reality, and tries to cover it over with a curtain of fantasy, where everything is clear. It does not worry him that his “ideas” are not true, he uses them as trenches for the defense of his existence, as scarecrows to frighten away reality.
Man is out of nature and hopelessly in it; he is dual, up in the stars and yet housed in a heart-pumping, breath-gasping body that once belonged to a fish and still carries the gill-marks to prove it. His body is a material fleshy casing that is alien to him in many ways—the strangest and most repugnant way being that it aches and bleeds and will decay and die. Man is literally split in two: he has an awareness of his own splendid uniqueness in that he sticks out of nature with a towering majesty, and yet he goes back into the ground a few feet in order blindly and dumbly to rot and disappear forever.
The defeat of despair is not mainly an intellectual problem for an active organism, but a problem of self-stimulation via movement. Beyond a given point man is not helped by more “knowing,” but only by living and doing in a partly self-forgetful way. As Goethe put it, we must plunge into experience and then reflect on the meaning of it. All reflection and no plunging drives us mad; all plunging and no reflection, and we are brutes.
A person spends years coming into his own, developing his talent, his unique gifts, perfecting his discriminations about the world, broadening and sharpening his appetite, learning to bear the disappointments of life, becoming mature, seasoned—finally a unique creature in nature, standing with some dignity and nobility and transcending the animal condition; no longer driven, no longer a complex reflex, not stamped out of any mold. And then the real tragedy, as Andre Malraux wrote in The Human Condition: that it takes sixty years of incredible suffering and effort to make such an individual, and then he is good only for dying.