All the troubles of life come upon us because we refuse to sit quietly for a while each day in our rooms.

Those are weaklings who know the truth and uphold it as long as it suits their purpose, and then abandon it.

Extremes are for us as if they were not, and as if we were not in regard to them; they escape from us, or we from them.

Man is obviously made for thinking. Therein lies all his dignity and his merit; and his whole duty is to think as he ought.

All human evil comes from a single cause, man's inability to sit still in a room.

You corrupt religion either in favour of your friends, or against your enemies.

By a peculiar prerogative, not only each individual is making daily advances in the sciences, and may make advances in morality (which is the science, by way of eminence, of living well and being happy), but all mankind together is making a continual progress in proportion as the universe grows older. So that the whole human race, during the course of so many ages, may be considered as one man who never ceases to live and learn.