可持续发展不仅仅是一个流行词，而是我们对后代的责任。

「通过改变行为来改变你的想法」要比「通过改变想法来改变你的行为」更容易实现。把你所追求的改变付诸行动。

We don't read and write poetry because it's cute,We read and write poetry because we are members of the human race，And the human race is filled with passion，Medicine,law,business,engineering,these are noble pursuits and necessary to sustain life，But poetry...beauty,romance,love...these are what we stay alive for，To quote from Whitman,“O me，O life， of the questions of these recurring，of the endless trains of the faithless，of cities filled with the foolish，what good amid these,O me,O life?”Answer.That you are here,that life exists and identity,that the powerful play goes on and you may contribute a verse， That the powerful play goes on and you may contribute a verse.

学会怎么打称人结（又叫“撑人结”，不会越拉越小的结）。而且要摸黑练习、单手练习。在今后的日子里，你根本想不到它有多有用。