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Show me your calendar and I will tell you your priorities. Tell me who your friends are， and I’ll tell you where you’re going.

No matter how good you get you can always get better, and that's the exciting part.

The interplay between theory and observation is what advances astrophysics.

A writer is selected by his subject—his subject being the consciousness of his own era.

The study of mathematics is the indispensable basis for all intellectual and spiritual progress.

世界是一本書，不旅行的人只讀了一頁。

時間是我們唯一真正的敵人，也是我們永遠無法擊敗的敵人。

數(shù)學的力量來自于它的抽象和概括能力，將具體問題轉(zhuǎn)化為普遍真理。