Doubt Quote by Denis Diderot

A thing is not proved just because no one has ever questioned it. What has never been gone into impartially has never been properly…

— Denis Diderot

There is no skepticism without science and the scientific method. It's about how we know what we know.

— Steven Novella

What has not been examined impartially has not been well examined. Skepticism is therefore the first step towards truth.

— Denis Diderot

A proof tells us where to concentrate our doubts.

— Morris Kline

Skepticism is not an end in itself; it is a tool for the discovery of truths.

— Sydney J. Harris

Skepticism is the beginning of faith.

— Oscar Wilde

Skepticism is forever whispering in your ears. You're very new at this. You may be mistaken. You've been wrong before.

— D. J. Grothe

For those who believe, no proof is necessary. For those who don't believe, no proof is possible.

— Stuart Chase

Skepticism is only a time-based reality, and as an ultimate reality, it's always wrong, because everything always happens.

— Kevin Shields

“Skepticism is no more “neutral” or “objective” than faith. It has thrived in the post-Enlightenment world, which didn’t want God (or, in many cases,…

— N.T. Wright

Skepticism is like a microscope whose magnification is constantly increased: the sharp image that one begins with finally dissolves, because it is not possible…

— Stanislaw Lem

One might be asked "How can you prove that a god does not exist?" One can only reply that it is scarcely necessary to…

— David A Spitz