Indeed, there is an eloquence in true enthusiasm that is not to be doubted.
Doubt is the vestibule through which all must pass before they can enter into the temple of wisdom.
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.
If the Sun and Moon should ever doubt, they'd immediately go out.
Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it's the only thing that ever has.
I respect faith, but doubt is what gets you an education.
There is nothing more dreadful than the habit of doubt.
There lives more faith in honest doubt, believe me, than in half the creeds.
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
Doubt comes in at the window when inquiry is denied at the door.
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 is a pain too lonely to know that faith is his twin brother.
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.
Our doubts are traitors and make us lose the good we oft might win by fearing to attempt.
Doubt is not a pleasant condition, but certainty is absurd.
Doubt whom you will, but never yourself.
Doubt is the beginning, not the end, of wisdom.
In all affairs it's a healthy thing now and then to hang a question mark on the things you have long taken for granted.
What is wanted is not the will to believe, but the will to find out, which is the exact opposite.
I think it's much more interesting to live not knowing than to have answers which might be wrong.
Doubt, of whatever kind, can be ended by action alone.
A mind troubled by doubt cannot focus on the course of victory.
Beliefs are what divide people. Doubt unites them.
We know accurately only when we know little, with knowledge doubt increases.
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