Quality is free. It's not a gift, but it's free. What costs money are the unquality things -- all the actions that involve not doing jobs right the first time.
Forests are the lungs of the earth, and we must protect them with the same urgency as our own health.
每一个挑战都是学习和改进的机会。
交易市场就像上帝一样，帮助那些自助者。但是和上帝不同的是，交易市场不会原谅那些不知道自己在做什么的人。