Self-education is, I firmly believe, the only kind of education there is.

财富地位如同浮云般虚幻，功名利禄像流水一样易逝。

I said, to the people of the Philippines whence I came, I shall return. Tonight, I repeat those words: I shall return!

农业的成功来自于理解自然，而不是与之对抗。

DNA的结构是一个需要解决的谜题。