过去从未死去，甚至从未过去。
The past is never dead. It's not even past.
真正的挑战不是生产更多粮食，而是用更少的浪费更聪明地种植。
There is no such thing as a moral or an immoral book. Books are well written, or badly written.
Overfishing is short-sighted; we must leave a bountiful ocean for future generations.
敢于求知！要有勇气运用你自己的理智。