The only way to learn mathematics is to do mathematics.
学习数学的唯一方法就是做数学。
The laws of physics are the same everywhere in the universe, and that is a profound truth that connects us all.
翻译:强调了人与自然的相互依存关系,人的价值在于利用天地之功来养活自己。
The hardest decisions often yield the greatest rewards.
The desire for recognition, the thymotic part of the soul, is the most fundamentally human part of the human being.