We must balance economic growth with environmental responsibility.
领导力意味着今天做出艰难的决定，为了更美好的明天。
One foul sentence does more hurt than many foul examples. For these do but corrupt the stream；the other corrupt the fountain.
The world is a mirror, and we see in it what we are.
There is no such thing as a small moment; every moment contains eternity.
The mathematician's best work is art, a high perfect art, as daring as the most secret dreams of imagination, clear and limpid.