To deny, to believe, and to doubt well, are to a man what the race is to a horse.

Few men speak humbly of humility, chastely of chastity, skeptically of skepticism

You can feed a skeptic the party line but you can't make him swallow it.

Skepticism is slow suicide

[n regard to Jesus believing himself inspired]
This belief carried no more personal imputation than the belief of Socrates that he was under the care and admonition of a guardian demon. And how many of our wisest men still believe in the reality of these inspirations while perfectly sane on all other subjects (Works, Vol. iv, p. 327).

Religion is like a blind man looking in a black room for a black cat that isn't there, and finding it.