“Eureka, Eureka! (I found it, I found it!).”

“Happiness can be found neither in ourselves nor in external things, but in God and in ourselves as united to him.”

“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.”