Basically, there can only be two answers. One is to overcome separateness and find unity by regression to the state of unity which existed before awareness ever arose, that is, before man was born. The other answer is to be fully born, to develop one's awareness, one's reason, one's capacity to love to such a point that one transcends one's own egocentric involvement, and arrives at a new harmony, at a new oneness with the world.
Even if man's hunger and thirst and his sexual strivings are completely satisfied, 'he' is not satisfied. In contrast to the animal his most compelling problems are not solved then, they only begin. He strives for power or for love, or for destruction, he risks his life for religious, for political, for humanistic ideals, and these strivings are what constitutes and characterizes the peculiarity of human life.
Reason is man's faculty for grasping the world by thought, in contradiction to intelligence, which is man's ability to manipulate the world with the help of thought. Reason is man's instrument for arriving at the truth, intelligence is man's instrument for manipulating the world more successfully; the former is essentially human, the latter belongs to the animal part of man.
All great art is by its very essence in conflict with the society with which it exists. It expresses the truth about the existence regardless of whether this truth serves or hinders the survival purpose of a given society. All great art is revolutionary because it touches upon the reality of man and questions the reality of the various transitory forms of human society.
That man can destroy life is just as miraculous a feat as that he can create it, for life is the miracle, the inexplicable. In the act of destruction, man sets himself above life; he transcends himself as a creature. Thus, the ultimate choice for a man, inasmuch as he is driven to transcend himself, is to create or to destroy, to love or to hate.
Modern man has transformed himself into a commodity; he experiences his life energy as an investment with which he should make the highest profit, considering his position and the situation on the personality market. He is alienated from himself, from his fellow men and from nature. His main aim is profitable exchange of his skills, knowledge, and of himself, his "personality package" with others who are equally intent on a fair and profitable exchange. Life has no goal except the one to move, no principle except the one of fair exchange, no satisfaction except the one to consume.p97.
Optimism is an alienated form of faith, pessimism an alienated form of despair. If one truly responds to man and his future, ie , concernedly and "responsibly." one can respond only by faith or by despair. Rational faith as well as rational despair are based on the most thorough, critical knowledge of all the factors that are relevant for the survival of man.
Man, the more he gains freedom in the sense of emerging from the original oneness with man and nature and the more he becomes an "individual," has no choice but to unite himself with the world in the spontaneity of love and productive work or else to seek a kind of security by such ties with the world as destroy his freedom and the integrity of his individual self.