The most important thing is that we develop an interest in the world and take joy in our fellow human beings.

By used books. They have the same words as the new ones. Also libraries.

自行车是我改变的工具。它是我产生影响的手段。

释义：清风虽有意挽留却难以留住我，明月虽无心却自然地照耀着我。

永远不要低估小而持续的改进的力量。

Don't be defined by what you didn't know or didn't do.

写作是为沉默者发声，让不可见的事物显现。