#Certainty

"We often call a certainty a hope, to bring it luck."

"I believe in intuitions and inspirations...I sometimes FEEL that I am right. I do not KNOW that I am."

"I believe that we do not know anything for certain, but everything probably."

"It's not about whether or not someone is a bigot, but whether or not the argument which that someone is arguing is worth being a bigot about."

"I like the scientific spirit—the holding off, the being sure but not too sure, the willingness to surrender ideas when the evidence is against them: this is ultimately fine—it always keeps the way beyond open—always gives life, thought, affection, the whole man, a chance to try over again after a mistake—after a wrong guess."

"Feeling lost, crazy and desperate belongs to a good life as much as optimism, certainty and reason."

"If in other sciences we should arrive at certainty without doubt and truth without error, it behooves us to place the foundations of knowledge in mathematics."

"When your only regret is if anyone thinks you regret anything - that is the definition of conviction."

"If you do not know where you come from, then you don't know where you are, and if you don't know where you are, then you don't know where you're going. And if you don't know where you're going, you're probably going wrong."

"I always make sure that the world will prove me right. It gives me the freedom to contradict myself."

"In God's eyes, a man who teaches one truth and nothing else is more righteous than a man who teaches a million truths and one lie."

"Doubter wants proof which contributes nothing to her faith."

"In our reasonings concerning matter of fact, there are all imaginable degrees of assurance, from the highest certainty to the lowest species of moral evidence. A wise man, therefore, proportions his belief to the evidence."

"You’ve got to be sure of yourself beforeYou can ever win a prize."

"Certainty is the most vivid condition of ignorance and the most necessarycondition for knowledge."

"Peaceful disputes are maintained when men sincerely believe that they are morally, logically correct about the issues at hand. It is when neither side is really certain that wars are instigated."

"There is no such uncertainty as a sure thing."

"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 whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts."

"The devil's happy when the critics run you off."