If only God would give me some clear sign! Like making a large deposit in my name at a Swiss bank.

A skeptic is a person who, when he sees the handwriting on the wall, claims it is a forgery.

If I am fool, it is, at least, a doubting one; and I envy no one the certainty of his self-approved wisdom.

Skepticism: the mark and even the pose of the educated mind.

Lord I disbelieve -- help thou my unbelief.

Truth, Sir, is a cow which will yield such people no more milk, and so they are gone to milk the bull.

Nearly all the powerful people of this age are unbelievers, the best of them in doubt and misery, the most in plodding hesitation, doing as well as they can, what practical work lies at hand.

There is a kind of courtesy in skepticism. It would be an offense against polite conventions to press our doubts too far.

The poison of skepticism becomes, like alcoholism, tuberculosis, and some other diseases, much more virulent in a hitherto virgin soil.

Skepticism is the beginning of Faith.