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.