The basic stimulus to the intelligence is doubt, a feeling that the meaning of an experience is not self-evident.
Believe your beliefs and doubt your doubts.
Faith which does not doubt is dead faith.
Doubt is one of the main paths on the highway to failure.
Doubt is the tax man pays for the luxury of useless knowledge.
Like belief, doubt takes a lot of different forms, from ancient Skepticism to modern scientific empiricism, from doubt in many gods to doubt in one God, to doubt that recreates and enlivens faith and doubt that is really disbelief.
We are not necessarily doubting that God will do the best for us; we are wondering how painful the best will turn out to be.
Doubt is a central factor all the time. There's always the doubt: What the hell am I doing out here in the middle of the woods, all alone, painting?
Doubt, indulged and cherished, is in danger of becoming denial; but if honest, and bent on thorough investigation, it may soon lead to full establishment of the truth.
If the Sun and Moon should ever doubt, they'd immediately go out.
There was a castle called Doubting Castle, the owner whereof was Giant Despair.
We know accurately only when we know little, with knowledge doubt increases.
Doubt is to certainty as neurosis is to psychosis. The neurotic is in doubt and has fears about persons and things; the psychotic has convictions and makes claims about them. In short, the neurotic has problems, the psychotic has solutions.
Life is doubt, and faith without doubt is nothing but death.
Men become civilized, not in proportion to their willingness to believe, but in their readiness to doubt.
To believe with certainty, we must begin with doubting.
To doubt is worse than to have lost; And to despair is but to antedate those miseries that must fall on us.
Nothing is more durable than the dynasty of Doubt; for he reigns in the hearts of all his people, but gives satisfaction to none of them, and yet he is the only despot who can never die, while any of his subjects live.
The wound of peace is surety, Surety secure; but modest doubt is called The beacon of the wise, the tent that searches To th' bottom of the worst.
To be once in doubt Is once to be resolved.
Your doubt can become a good quality if you train it. It must become knowing, it must become criticism.
Doubting charms me not less than knowledge.
He who dallies is a dastard, He who doubts is damned.
Doubt, the essential preliminary of all improvement and discovery, must accompany the stages of man's onward progress. The faculty of doubting and questioning, without which those of comparison and judgment would be useless, is itself a divine prerogative of the reason.
A weak man has doubts before a decision; a strong man has them afterwards.
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