When the last tree is cut, the last dollar will lose its meaning.

"The world is not a wish-granting factory."

Every artist dips his brush in his own soul, and paints his own nature into his pictures.

译文：江头上的风波还不算最险恶的，人间的道路比这还要难行得多!

Success in any scientific career requires an unusual equipment of capacity, industry, and energy.

今天很好，今天很有趣。明天又是新的一天。