The science of love is the philosophy of the heart
It is exercise alone that supports the spirits, and keeps the mind in vigor.
The searching-out and thorough investigation of truth ought to be the primary study of man.
History is indeed the witness of the times, the light of truth.
Nor am I ashamed, as some are, to confess my ignorance of those matters with which I am unacquainted.
They who dare to ask anything of a friend, by their very request seem to imply that they would do anything for the sake of that friend.