Judge men not by their opinions, but by what their opinions have made of them.

Don't judge a man by his opinions, but what his opinions have made of him.

What the world needs is not dogma but an attitude of scientific inquiry combined with a belief that the torture of millions is not desirable, whether inflicted by Stalin or by a Deity imagined in the likeness of the believer.

The proof that man is the noblest of all creatures is that no other creature has ever denied it.