The study of mathematics is like air or water to the development of science.

To be without some of the things you want is an indispensable part of happiness.

语言是唯一的家园。

Make you the most impatient are your greatest source of learning.

伟大的事情都很简单。而且大多数都可以被凝结成一个简单的单词：自由；公正；荣誉；责任；仁慈；希望。