Life is an adventure, dare it.
The true value of a tree isn't in its board feet, but in its roots and reach.
自动控制的艺术在于正确调整修正力。
对于那些没有研究过数学的人来说,有些事情似乎是难以置信的。
"The hardest thing in life is to know which bridge to cross and which to burn."