The only thing that can make you a hero is your heart.
你付出的能量就是你得到的能量。
The poor are not lazy; they are just caught in a system that makes it very hard for them to escape poverty.
化学之美在于它能够从基本原理中创造出新的可能性。
智慧总是在它不再有任何用处时才降临到我们身上。
Quality is remembered long after the price is forgotten.