A favor is to a grateful man delightful always; to an ungrateful man only once.

How many discoveries are reserved for the ages to come when our memory shall be no more, for this world of ours contains matter for investigation for all generations.

Consider, when you are enraged at any one, what you would probably think if he should die during the dispute.

The swiftness of time is infinite, as is still more evident when we look back on the past.

A disease is farther on the road to being cured when it breaks forth from concealment and manifests its power.

Who is everywhere is nowhere. When a person spends all his time in foreign travel, he ends by having many acquaintances, but no friends.

It is the constant fault and inseparable evil quality of ambition, that it never looks behind it.