Morality must guide calculation, and calculation must guide politics.

The voice of conscience is so delicate that it is easy to stifle it; but it is also so clear that it is impossible to mistake it.

Enthusiasm gives life to what is invisible; and interest to what has no immediate action on our comfort in this world.

[On Italian:] One may almost call it a language that talks of itself, and always seems more witty than its speakers.

A Gothic building engenders true religion ... The light, falling through colored glass, the singular forms of the architecture, unite to give a silent image of that infinite mystery which the soul for ever feels, and never comprehends.

One must, in one's life, make a choice between boredom and suffering.

A voyage without companionship, that is to say without conversation, is one of the saddest pleasures of life.