If you don't fail at least 90 percent of the time, you're not aiming high enough.
能正确指出我缺点的人,是我的好老师;能赞成又能鞭策我的人,是我的好朋友;谄媚又阿谀奉承我的人,是害我的贼寇。
"The act of writing is an act of optimism. You wouldn't take the trouble to do it if you felt it didn't matter."
煤炭的真正成本不仅在于价格,还在于我们如何管理其后果。