Fanaticism consists in redoubling your effort when you have forgotten your aim.

Sanity is a madness put to good use.

Society is like the air; necessary to breathe, but insufficient to live on.

Those who cannot remember the past are condemned to repeat it.

Science is nothing but developed perception, interpreted intent, common sense rounded out and minutely articulated.

America is a young country with an old mentality.

Our character…is an omen of our destiny, and the more integrity we have and keep, the simpler and nobler that destiny is likely to be.