~ If a man will begin with certainties, he shall end in doubts, but if he will be content to begin with doubts, he shall end in certainties. ~
~ The more doubt you have, the less likely it is that the creation will come to life. ~
~ Faith and doubt both are needed -- not as antagonists, but working side by side -- to take us around the unknown curve. ~
~ To deny, to believe, and to doubt absolutely -- this is for man what running is for a horse. ~
~ Doubt is part of all religion. All the religious thinkers were doubters. ~
~ To have doubted one's own first principles is the mark of a civilized man. ~
~ If you doubt you can accomplish something, then you can't accomplish it. You have to have confidence in your ability, and then be tough enough to follow through. ~
~ Jealousy lives upon doubts, it becomes madness or ceases entirely as soon as we pass from doubt to certainty. ~
~ Galileo called doubt the father of invention;
it is certainly the pioneer. ~
~ Don't waste life in doubts and fears; spend yourself on the work before you, well assured that the right performance of this hour's duties will be the best preparation for the hours and ages that will follow it. ~
~ I respect faith, but doubt is what gets you an education. ~
~ Doubt is the father of invention. ~