Obstinacy in a bad cause is but constancy in a good.

Light that makes things seen, makes some things invisible.

Life is a pure flame and we live by an invisible sun within us.

Gold once out of the earth is no more due unto it; what was unreasonably committed to the ground, is reasonably resumed from it; let monuments and rich fabricks, not riches, adorn men's ashes.

It is the common wonder of all men, how among so many million faces, there should be none alike.

We term sleep a death, and yet it is waking that kills us, and destroys those spirits that are the house of life.

No one should approach the temple of science with the soul of a money changer.