An hour-glass is a reminder not only of time's quick flight, but also of the dust to which we must at last return

One's first step in wisdom is to question everything - and one's last is to come to terms with everything.

Before we blame we should first see whether we cannot excuse.

Nothing reveals a man's character better than the kind of joke at which he takes offense.

What is called an acute knowledge of human nature is mostly nothing but the observer's own weaknesses reflected back from others.

Everyone is a genius at least once a year. The real geniuses simply have their bright ideas closer together.

One cannot demand of a scholar that he show himself a scholar everywhere in society, but the whole tenor of his behavior must none the less betray the thinker, he must always be instructive, his way of judging a thing must even in the smallest matters be such that people can see what it will amount to when, quietly and self-collected, he puts this power to scholarly use.