Indeed, there is an eloquence in true enthusiasm that is not to be doubted.
The only limit to our realization of tomorrow will be our doubts of today.
Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it's the only thing that ever has.
Love and doubt have never been on speaking terms.
We know accurately only when we know little, with knowledge doubt increases.
What is wanted is not the will to believe, but the will to find out, which is the exact opposite.
The purposes of the United States should not be doubted. The Security Council resolutions will be enforced - the just demands of peace and security will be met - or action will be unavoidable. And a regime that has lost its legitimacy will also lose its power.
I never doubted that equal rights was the right direction. Most reforms, most problems are complicated. But to me there is nothing complicated about ordinary equality.
The capacity of the female mind for studies of the highest order cannot be doubted, having been sufficiently illustrated by its works of genius, of erudition, and of science.
Doubt, of whatever kind, can be ended by action alone.
People in general are equally horrified at hearing the Christian religion doubted, and at seeing it practiced.
The right of a nation to kill a tyrant in case of necessity can no more be doubted than to hang a robber, or kill a flea.
Doubt is the incentive to truth and inquiry leads the way.
One who never turned his back but marched breast forward, never doubted clouds would break, Never dreamed, though right were worsted, wrong would triumph, Held we fall to rise, are baffled to fight better, sleep to wake.
People have always doubted whether I was good enough to play this game at this level. I thought I was, and I thought I could be. What other people thought was really always irrelevant to me.
Doubt is the beginning, not the end, of wisdom.
I respect faith, but doubt is what gets you an education.
To have doubted one's own first principles is the mark of a civilized man.
Doubt is not a pleasant condition, but certainty is absurd.
The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.
I never doubted my ability, but when you hear all your life you're inferior, it makes you wonder if the other guys have something you've never seen before. If they do, I'm still looking for it.
Doubt is not the opposite of faith; it is one element of faith.
There Lives More Faith in Honest Doubt, Believe Me, Than Half the Creeds. - Alfred, Lord Tennyson
There is nothing more dreadful than the habit of doubt.
If the Sun and Moon should ever doubt, they'd immediately go out.
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