We should take care not to make the intellect our god; it has, of course, powerful muscles, but no personality.
What lies behind us and what lies ahead of us are tiny matters compared to what lives within us.
Some people like my advice so much that they frame it upon the wall instead of using it.
Everyone complains of his lack of memory, but nobody of his want of judgment.
Modesty is a vastly overrated virtue.
Mankind must put an end to war, or war will put an end to mankind.
Who so loves believes the impossible.
Insanity — a perfectly rational adjustment to an insane world.