If a man really knew himself he would utterly despise the ignorant notions others might form on a subject in which he had such matchless opportunities for observation.

It would hardly be possible to exaggerate man's wretchedness if it were not so easy to overestimate his sensibility

All the doctrines that have flourished in the world about immortality have hardly affected man's natural sentiment in the face of death.

A man's memory may almost become the art of continually varying and misrepresenting his past, according to his interest in the present.

Intolerance is a form of egotism, and to condemn egotism intolerantly is to share it.

Habit is stronger than reason.

Those who cannot remember the pastare condemned to repeat it. or: Those who have never heard of good system development practice are condemned to reinvent it.