Mental activity is the organism's way of engaging with the world.

记着，希望是件好东西，没准儿是件最好的东西，而且从没有一样好东西会消逝！

Every tree planted today is an investment in a greener tomorrow.

最好的领导者不是培养追随者，而是培养更多的领导者。

I cannot but be astonished that Socrates， after having so often repeated to his fellow citizens that he did not pretend to any wisdom， but had been appointed by the gods to a mission of benevolence towards them， should have been condemned to death.

我们都是一样的，但我们又都不同。

哲学的任务不是提供答案，而是对问题本身提出质疑。