As long as anyone believes that his ideal and purpose is outside him, that it is above the clouds, in the past or in the future, he will go outside himself and seek fulfillment where it cannot be found. He will look for solutions and answers at every point except where they can be found- in himself.
Erich FrommEven 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.
Erich Fromm