这不是一种使我们感到不满意的动物本能。我会告诉你什么是：人类的最高愿望，成长和进步的需求……寻找新事物……，新的视野。扩大和征服新领土，新的经验；理解和生活在永久发展中。抛开例行和重复，打破毫无意义的习惯单调并前进，而不是停止...
(It is not an animal instinct that makes us feel dissatisfied. I will tell you what it is: the highest aspiration of man, the need to grow and progress..., to find new things..., new horizons. To expand and conquer new territories, new experiences; to understand and live in permanent evolution. To put aside routine and repetition, to break the senseless monotony of habit and move forward, and not stop...)