我不是因为快乐而唱歌,我因为唱歌而快乐。
I don't sing because I'm happy; I'm happy because I sing.
科学的进步始于对常识的质疑。
解释:才华有高下之分,没有古今之别;文章有真实、虚伪之差,没有新旧之异。
可持续性是现代农业的基石。没有它,我们可能会失去我们所建立的一切。
I am too intelligent, too demanding, and too resourceful for anyone to be able to take charge of me entirely. No one knows me or loves me completely. I have only myself.