“Patience and tenacity are worth more than twice their weight of cleverness.”

“The rung of a ladder was never meant to rest upon, but only to hold a man's foot long enough to enable him to put the other somewhat higher.”

“Science commits suicide when it adopts a creed.”

“The great tragedy of science - the slaying of a beautiful hypothesis by an ugly fact.”

“Science is organized common sense where many a beautiful theory was killed by an ugly fact.”

“Science is simply common sense at its best, that is, rigidly accurate in observation, and merciless to fallacy in logic.”

“Promise was like a precious stone, she told me: hypnotising, but after a while the weight of it could sink you.”

“Rarely promise, but, if lawful, constantly perform.”

“When did the future switch from being a promise to a threat?”

“If we talk about the living oracles and want to pay respect to them, how shall we do this? Shall we do it by never reading their words-by paying not attention to that which they say? That is a very...”

“...one could accept Muhammad as a genuine mysticjust as one could accept Joan of Arc's voices as having genuinely been heard by her, or the revelations of Saint John the Divine as being that troubl...”

“...one could accept Muhammad as a genuine mystic—just as one could accept Joan of Arc's voices as having genuinely been heard by her, or the revelations of Saint John the Divine as being that troub...”

“Which one is the truth, sir?Which period do you mean, son?”

“In order to understand the universal perspective,first you have to know more than a version of truth.”

“Which one is the truth, sir?Which period do you mean, son?”