What makes a river so restful to people is that it doesn't have any doubt - it is sure to get where it is going, and it doesn't want to go anywhere else. ~ Hal Boyle

I am living proof that uncertainty is vastly underrated and often times a blessing in disguise. ~ Tony Shalhoub

When we are not sure, we are alive. ~ Graham Greene

When the mind is in a state of uncertainty, the smallest impulse directs it to either side. ~ Terence

I had as many doubts as anyone else. Standing on the starting line, we're all cowards. ~ Alberto Salazar

Where there is doubt, there is freedom. ~ Latin Proverb

Our doubts are traitors and make us lose the good we oft might win by fearing to attempt. ~ William Shakespeare, Measure For Measure

It is never worth while to make rents in a garment for the sake of mending them? Nor to create doubts in order to show how cleverly we can quiet them. ~ Charles Haddon Spurgeon

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. ~ René Descartes

If you must tell me your opinions, tell me what you believe in. I have plenty of doubts of my own. ~ Johann von Goethe

Doubt is uncomfortable, but certainty is ridiculous. ~ Voltaire

Nothing will ever be attempted is all possible objections must be first overcome. ~ Samuel Johnson

Doubts are more cruel that the worst of truths. ~ Jean Baptiste Molière

Doubt begins only at the last frontiers of what is possible. ~ Giovanni Jacopo Casanova