The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.

否认进化史就是否认我们自己。

The most effective development interventions are often the simplest ones.

谦逊退让，是全身避祸的首要方法；从容稳重，是立身处世的首要方法；涵养包容，是屈己待人的首要方法；洒脱不拘，是养心全性的首要方法。

记忆是诗歌栖息的领地。

可持续性是农业的未来，忽视它的人将被淘汰。