The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
数学家研究纯数学不是因为它有用;他研究它是因为他喜欢它,他喜欢它是因为它美丽。
我们无法不了解历史。
真理是永恒不变的。
"The best stories are those that stay with you long after you've turned the last page."
通过行动来验证你的思想。