产生好结果的人会自我感觉良好。
质量从来不是偶然的；它始终是智慧努力的结果。
The magical number seven, plus or minus two: some limits on our capacity for processing information.
神奇的数字七，加减二：我们信息处理能力的一些限制。
The beauty of computer science is that it allows us to create worlds within worlds, limited only by our imagination.
The true value of a forest is measured not just in board feet of timber, but in the lives it sustains and the ecosystems it supports.
解决全球饥饿的关键不仅是提高产量，还要改善营养质量。
绝望会加倍力量。