There is nothing that can be changed more completely than human nature when the job is taken in hand early enough.

Those who understand the steam engine and the electric telegraph spend their lives in trying to replace them with something better.

I can't control what life did to me, but I can control how I react. Therein lies the difference.

I learned long ago, never to wrestle with a pig. You get dirty, and besides, the pig likes it.

Audacious ribald: your laughter will finish in hideous boredom before morning.

Life is too short for men to take it seriously.

All progress depends on the unreasonable man.