生命是一场永无休止的战斗。

let everyone else call your idea crazy, just keep going, don't stop, don't even think about stopping until you get there, and don't give much think of where "there" is.

地理学的研究是对地球作为人类居住地的研究。

做出伟大工作的唯一途径是热爱你所做的事情。