Pride relates more to our opinion of ourselves, vanity to what we would have others think of us.

世界是一本书，不旅行的人只读了一页。

The past is never dead. It's not even past.

成人必须了解，儿童需要运用双手，并认同儿童第一次运用双手时，只是工作本能的展现。

可持续性不是一种选择，而是一种责任。