Defined in psychological terms, a fanatic is a man who consciously over-compensates a secret doubt.

But let no one be under any doubt that the scale of the challenge that Europe faces in this emerging global economy is immense and the practical pace of our collective action to meet these challenge to date has just been too slow.

I doubt if the public thought of me as Christ when they next saw me as Temple Houston on television.

The greater the artist, the greater the doubt. Perfect confidence is granted to the less talented as a consolation prize.

Live so that you can at least get the benefit of the doubt.

A woman will doubt everything you say except it be compliments to herself.

I would not be gotten into a schoolhouse until I was eight years old. Nor did I accomplish much after I started. I doubt if I had gone to school six months in all when my father died. I was fourteen at the time.

Do you know, a horrible thing has happened to me. I have begun to doubt Tennyson.

There is no doubt that the first requirement for a composer is to be dead.

When in doubt, do it.

I think Picasso was, without doubt, the greatest portraitist of the 20th century, if not any other century.

In this world of doubt, one thing is certain for me; that I will go on writing songs up to and - I hope, through heavenly means or diabolical - beyond the day I die.

Understand this law and you will then know, beyond room for the slightest doubt, that you are constantly punishing yourself for every wrong you commit and rewarding yourself for every act of constructive conduct in which you indulge.

Wise men, when in doubt whether to speak or to keep quiet, give themselves the benefit of the doubt, and remain silent.

Wonder rather than doubt is the root of all knowledge.