The hand that follows intellect can achieve.

The stone unhewn and cold Becomes a living mould, The more the marble wastes The more the statue grows.

Great spirits have always encountered violent opposition from mediocre minds.

We should take care not to make the intellect our god; it has, of course, powerful muscles, but no personality.

Nothing is more difficult, and therefore more precious, than to be able to decide

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.