The threat of a neglected cold is for doctors what the threat of purgatory is for priests-a gold mine.

Be my brother or I will kill you.

Man may aspire to virtue, but he cannot reasonably aspire to truth.

Contemptuous people are sure to be contemptible.

Thought consoles us for all, and heals all. If at times it does you ill, ask it for the remedy for that ill and it will give it to you.

Eminence without merit earns deference without esteem.

Someone has said that to plagiarise from the ancients is to play the pirate beyond the Equator, but that to steal from the moderns is to pick pockets at street corners.