反对森林砍伐的斗争是为人类的未来而战。
Prophesying was the only human art that couldn't be improved by practice.
"The past is always with us, for it feeds the present."
I'm not a time, I'm a space.
你不能仅仅因为情况不理想就放弃某人。
Mental phenomena can only be understood in terms of their consequences for action.