A little learning is not a dangerous thing to one who does not mistake it for a great deal. – William Allen White

I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me. – Isaac Newton (1642–1727), spoken the evening before his death

Ruin and recovery are both from within. – Epictetus

Liberal institutions straightway cease from being liberal the moment they are soundly established. – Nietzsche, Twilight of the Idols, 1888