The most dangerous untruths are truths slightly distorted.

The most dangerous untruths are truths moderately distorted.

Doubt must be no more than vigilance, otherwise it can become dangerous.

With most people disbelief in a thing is founded on a blind belief in some other thing.

The most perfect ape cannot draw an ape; only man can do that; but, likewise, only man regards the ability to do this as a sign of superiority.

Just as the performance of the vilest and most wicked deeds requires spirit and talent, so even the greatest demand a certain insensitivity which under other circumstances we would call stupidity.