If you want enemies, excel others; if you want friends, let others excel you.

It has been well observed that the tongue discovers the state of the mind no less than that of the body; but in either case, before the philosopher or the physician can judge, the patient must open his mouth.

Metaphysicians have been learning their lessons for the last four thousand years, and it is high time that they should now begin to teach us something. Can any of the tribe inform us why all the operations of the mind are carried on with undiminished strength and activity in dreams, except the judgment, which alone is suspended and dormant?

Most men know what they hate, few what they love.

Pure truth, like pure gold, has been found unfit for circulation because men have discovered that it is far more convenient to adulterate the truth than to refine themselves.

Injuries accompanied with insults are never forgiven: all men, on these occasions, are good haters, and lay out their revenge at compound interest.

True contentment depends not upon what we have; a tub was large enough for Diogenes, but a world was too little for Alexander.