The greatest slave in a kingdom is generally the king of it.

Habit is the cement of society, the comfort of life, and, alas! The root of error.

Man is the only creature endowed with the power of laughter; is he not also the only one that deserves to be laughed at?

No man was ever so much deceived by another as by himself.

Men often prove the violence of their own prejudices, even by the violence with which they attack the prejudices of other people.

The mind's eye is perhaps no better fitted for the full radiance of truth, than is the body's for that of the sun.

It is in numberless instances happier to have a false opinion which we believe true, than a true one of which we doubt.