“In teaching there can be too much emphasis on certainty and a proper appreciation of uncertainty is to be encouraged.”

“Faith is not a certainty. Faith is the courage to live with uncertainty.”

“He is no wise man that will quit a certainty for an uncertainty.”

“If it is true that we need a degree of certainty to get by, it is also true that too much of the stuff can be lethal.”

“I am certain there is too much certainty in the world.”

“Most of the people are placing too much emphasis of their happiness on price, rather than on value.”

“Good films flop, atrocious films do well. Uncertainty is the only certainty in this business.”

“In an economy where the only certainty is uncertainty, the one sure source of lasting competitive advantage is knowledge.”

“I cannot separate problems happening in South Africa with problems here. I don't think you can put too much emphasis on something as brutal and overt as South Africa.”

“Although our intellect always longs for clarity and certainty, our nature often finds uncertainty fascinating.”