Doubt kills more dreams than failure ever will.
To have doubted one's own first principles is the mark of a civilized man.
To rest upon a formula is a slumber that, prolonged, means death.
I will not attack your doctrines nor your creeds if they accord liberty to me. If they hold thought to be dangerous — if they aver that doubt is a crime, then I attack them one and all, because they enslave the minds of men.
I may be wrong, and often am, but I never doubt.
What is clear to one man may be doubtful to another.
Doubt is useful, it keeps faith a living thing. After all, you cannot know the strength of your faith until it has been tested .
He would not, with a peremptory tone, Assert the nose upon his face his own.william cowper
Uncertain ways unsafest are, And doubt a greater mischief than despair.
Vous ne prouvez que trop que chercher à connaître N'est souvent qu' apprendre à douter.
He who dallies is a dastard, He who doubts is damned.
And he that doubteth is damned if he eat.
But now I am cabin'd, cribb'd, confin'd, bound in To saucy doubts and fears.william shakespeare
Our doubts are traitors And make us lose the good we oft might win By fearing to attempt.william shakespeare
I follow my law and fulfil it all duly—and look! when your doubt runneth high— North points to the needle!
Doubt comes in at the window when inquiry is denied at the door.
Who never doubted, never half believed. Where doubt there truth is 'tis her shadow.philip james bailey
But yet, madam I do not like, "but yet," it does allay The good precedence; fie upon "but yet!" "But yet" is a gaoler to bring forth Some monstrous malefactor.william shakespeare
I follow my law and fulfil it all duly and look! when your doubt runneth high North points to the needle!
People, when asked if they are Christians, give some of the strangest answers you ever heard. Some will say if you ask them: "Well well well, I, I hope I am." Suppose a man should ask me if I am an American. Would I say: "Well, I well, I I hope I am?"
The moment you doubt whether you can fly, you cease for ever to be able to do it.j. m. barrie