數(shù)學不是一門演繹科學——那是陳詞濫調(diào)。當你試圖證明一個定理時,你不僅僅是列出假設(shè)然后開始推理。你所做的是反復(fù)試驗、實驗和猜測。
As long as man continues to be the ruthless destroyer of lower living beings, he will never know health or peace. For as long as men massacre animals, they will kill each other.
Welcome, O life! I go to encounter for the millionth time the reality of experience and to forge in the smithy of my soul the uncreated conscience of my race.
The greatest glory in living lies not in never falling, but in rising every time we fall.