“I had a feeling once about Mathematics, that I saw it all—Depth beyond depth was revealed to me—the…”

“I never failed in mathematics. Before I was fifteen I had mastered differential and integral calculus.”

“Einstein's manner was full of charm and bonhomie. He enjoyed a joke and had many a jibe at…”

“All knowledge of reality starts from experience and ends in it. Propositions arrived at by purely logical means…”

“One may say "the eternal mystery of the world is its comprehensibility.”

“Very late in life, when he was studying geometry, some one said to Lacydes, "Is it then a…”