数学的研究是所有智力和精神进步不可或缺的基础。
The study of mathematics is the indispensable basis for all intellectual and spiritual progress.
I'm not going to change who I am just because people want me to be something else.
You are too generous to trifle with me. If your feelings are still what they were last April, tell me so at once. My affections and wishes are unchanged, but one word from you will silence me on this subject forever.
I have always considered that the true test of a machine is its practical utility in the hands of the common laborer.
每个人都在寻找自己,即使他们不知道自己在寻找什么。