每个产品在设计时都应考虑到它的下一次生命。

Dark clouds becomes heaven's flowers when kissed by light。

The man who is anybody and who does anything is surely going to be criticized, vilified, and misunderstood. This is part of the penalty for greatness, and every great man understands it.

希望是黑暗中的一束光。

数学的美在于它简化复杂问题的能力。