The only limit to our realization of tomorrow will be our doubts of today.
No doubt one may quote history to support any cause, as the devil quotes scripture; but modern history is not a very satisfactory side-arm in political polemics; it grows less and less so.
Doubt yourself and you doubt everything you see. Judge yourself and you see judges everywhere. But if you listen to the sound of your own voice, you can rise above doubt and judgment. And you can see forever.
Finish each day and be done with it. You have done what you could. Some blunders and absurdities no doubt crept in; forget them as soon as you can. Tomorrow is a new day; begin it well and serenely and with too high a spirit to be encumbered with your old nonsense.
Human beings are perhaps never more frightening than when they are convinced beyond doubt that they are right.
The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.
Doubt comes to the door in darkness, pretending to be alone and in need of your compassionate ear. But if you let him in, he'll bring his friends.
He that knows nothing doubts nothing.
Doubt is the beginning, not the end, of wisdom.
The beginning of wisdom is found in doubting; by doubting we come to the question, and by seeking we may come upon the truth.
If a man will begin with certainties, he shall end in doubts, but if he will content to begin with doubts, he shall end in certainties.
A hunted man sometimes wearies of distrust and longs for friendship.
Doubts must be resolved alone within the soul. Otherwise one would profane one's own powerful solution.
Doubt is a pain too lonely to know that faith is his twin brother.
Most men appear wiser in their doubts than in their belief.
Doubt indulged soon becomes doubt realized.
Doubt … is an illness that comes from knowledge and leads to madness.
Doubt is part of all religion. All the religious thinkers were doubters.
Beliefs are what divide people. Doubt unites them.
Galileo called doubt the father of invention; it is certainly the pioneer.
If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.
Doubt comes in at the window when inquiry is denied at the door.
The relationship between commitment and doubt is by no means an antagonistic one. Commitment is healthiest when it is not without doubt but in spite of doubt.
I show you doubt, to prove that faith exists.
The only thing that can stop you is the doubt that you carry in your mind.
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