The mind is a constantly adapting process.
"And this I believe: that the free, exploring mind of the individual human is the most valuable thing in the world. And this I would fight for: the freedom of the mind to take any direction it wishes, undirected."
《盐铁论·轻重》茂密的树林下面没有旺盛的青草;在没有平整的地里,长不出好的禾苗。比喻在强大的势力下,弱者会受到压制和侵害。