沉默是如此精确。

政策制定者应乐于根据新证据修正他们的观点。

在数学中，从问题到答案的旅程往往比答案本身更具启发性。

Order and simplification are the first steps toward the mastery of a subject.

每一天都是变得更好的机会。不要浪费它。

To find out what one is fitted to do, and to secure an opportunity to do it, is the key to happiness.

Success is my only option, failure's not.