Decisive inventions and discoveries always are initiated by an intellectual or moral stimulus as their actual motivating force, but, usually, the final impetus to human action is given by material impulses ... merchants stood as a driving force behind the heroes of the age of discovery; this first heroic impulse to conquer the world emanated from very mortal forces

But in the intellectual world, there is room for all opposing forces: even that which never appears victorious in the real world continues to be effective as a dynamic force (in the intellectual world) and precisely the unfulfilled ideals prove to be the most invincible.

Only that which points the human spirit beyond its own limitations into what is universally human gives the individual strength superior to his own. Only in suprahuman demands which can hardly be fulfilled do human beings and peoples feel their true and sacred measure.

Being sent to bed is a terrible command to all children, because it means the most public possible humiliation in front of adults, the confession that they bear the stigma of childhood, of being small and having a child's need for sleep.

Human life is so strangely constituted that even perfected intellectual understanding combined with the richest experience is incapable of conquering innate weaknesses. Even if it thoroughly analyzes itself, psychology (and this is one of the dubious aspects of psychoanalysis) can, to be sure, recognize its flawed native characteristics, but it cannot eliminate them. Understanding (them) is not the same as overcoming (them) and, again and again, we see the wisest of human beings helpless in the fact of their small follies which everyone else observes with a smile.

Memory is so corrupt that you remember only what you want to; if you want to forget about something, slowly but surely you do.

He who has been impoverished for a long timewho has long stood before the door of the mighty in darkness and begged for alms,has filled his heart with bitterness so that it resembles a sponge full of gall; he knows about the injustice and folly of all human action and sometimes his lips tremble with rage and a stifled scream.