无论多么艰难，永远不要放弃你的梦想。

The melancholy science from which I make this offering to my friend relates to a region that from time immemorial was regarded as the true field of philosophy, but which, since the latter's conversion into method, has lapsed into intellectual neglect, sententious whimsy, and finally oblivion.

You are never too old to set another goal or to dream a new dream.

当我们保护海洋生物多样性时，我们最终是在保护自己的粮食安全。

我们不能总是为我们的青年建造未来，但我们可以为未来建造我们的青年。