唯一真正的快乐是创造的快乐。
目标不是每次都正确，而是正确的次数比错误的次数多。
The true delight is in the finding out rather than in the knowing.
我返老还童了。
In the end, all we have are words.
Decide upon your major definite purpose in life and then organize all your activities around it.
One of my primary objects is to form the tools so the tools themselves shall fashion the work and give to every part its just proportion.
