You can't let praise or criticism get to you. It's a weakness to get caught up in either one.

解释：向善就好像攀登山峰一样难，向恶就好像山石坍塌那样容易。

真正的发现之旅不在于寻找新的风景，而在于拥有新的眼光。

Sustainability isn't an option; it's a necessity for the future of our planet.