“The diameter of the earth is greater than the diameter of the moon and the diameter of the sun is greater than the diameter of the earth.”

“Give me a place to stand, and a lever long enough, and I will move the world.”

“Mathematics reveals its secrets only to those who approach it with pure love, for its own beauty.”

“Man has always learned from the past. After all, you can't learn history in reverse!”

“Rise above oneself and grasp the world.”

“Those who claim to discover everything but produce no proofs of the same may be confuted as having actually pretended to discover the impossible.”

“Give me but a firm spot on which to stand, and I shall move the earth.”