When buying a garden hose， an extension cord， or a ladder， get one substantially longer than you think you need. It’ll be the right size.
La poesía es el lenguaje del alma, el eco de lo que no podemos expresar con palabras comunes.
历史不是过去。历史就是现在。我们随身携带着历史。
我们从不把成功视为理所当然。
好奇心是每一次重大科学进步背后的驱动力。
Nothing is really beautiful but truth, truth alone is lovely.
The greatest discoveries in mathematics are those that unify seemingly unrelated ideas.