Jesus is too colossal for the pen of phrasemongers, however artful. No man can dispose of Christianity with a bon mot

...Intelligence and character of the masses are incomparably lower than the intelligence and character of the few who produce something valuable for the community.

It is the same with people as it is with riding a bike. Only when moving can one comfortably maintain one's balance.

If at first the idea is not absurd, then there is no hope for it.

If you can't explain what you are doing to a nine-year-old, then either you still don't understand it very well, or it's not all that worthwile in the first place.

The stupid are invincible.

The fairest thing we can experience is the mysterious. It is the fundamental emotion that stands at the cradle of true art and true science. It is the source of all true art and science. He who knows it not and can no longer wonder, no longer feel amazement, is as good as dead, a snuffed-out candle.