When man and reason believed they were everything, they lost themselves; they were left, in certain respects, annihilated. Thus the man of the 20th century finds himself even more alone; this time without the world, without God, and without himself. A singular historical condition. Intellectually nothing is left to the man of today except the ontological place where the reality of the world, of God, and of his own existence were at one time able to be written. It is absolute solitude. Alone with his past, without any other support than what used to be, contemporary man hides from his vacuity; he takes refuge in the mnemonic revivification of a past; he extols the marvelous technical possibilities of the universe; he races to the solution of the urgent problems of day-to-day life. He flees from himself; he makes his life pass superficially. He renounces adoption of radical and ultimate attitudes and goals; the existence of contemporary man is constitutively centrifugal and penultimate. Whence the anguishing coefficient of provisionality which threatens to dissolve contemporary life.