I think it's rarely about what you actually learn in class. It's mostly about the way that you look at things.

The only limit to our realization of tomorrow is our doubts of today.

解释：信任是百姓、国家赖以生存的根基，不能失信于民。

Time and memory are true artists; they remould reality nearer to the heart’s desire.

投资于更清洁的煤炭技术就是投资于我们星球的未来。