“The question of the purpose of human life has been raised countless times; it has never yet received a satisfactory answer and perhaps does not admit of one. Some of those who have asked it have added that if it should turn out that life has no purpose, it would lose all value for them. But this threat alters nothing. It looks, on the contrary, as though one had a right to dismiss the question, for it seems to derive from the human presumptuousness, many other manifestations of which are already familiar to us. Nobody talks about the purpose of the life of animals, unless, perhaps, it may be supposed to lie in being of service to man. But this view is not tenable either, for there are many animals of which man can make nothing, except to describe, classify and study them; and innumerable species of animals have escaped even this use, since they existed and became extinct before man set eyes on them.
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We will therefore turn to the less ambitious question of what men themselves show by their behavior to be the purpose and intention of their lives. What do they demand of life and wish to achieve in it? The answer to this can hardly be in doubt. They strive for happiness; they want to become happy and to remain so. This endeavor has two sides, a positive and a negative aim. It aims, on the one hand, at an absence of pain and unpleasure, and, on the other, at the experiencing of strong feelings of pleasure. In its narrower sense the word 'happiness' only relates to the last. In conformity with this dichotomy in his aims, man's activity develops in two directions, according as it seeks to realize — in the main, or even exclusively — the one or the other of these aims.”
― Sigmund Freud,
Civilization and Its Discontents
