The biggest risk is not taking one.
"A book is a conversation between the writer and the reader across time."
好奇心推动数学家前进，总是在寻找下一个要回答的问题。
And I urge you to please notice when you are happy, and exclaim or murmur or think at some point, 'If this isn't nice, I don't know what is.'
农业的真正进步应以收成和生态系统健康双重标准衡量。
The best way to predict the future is to invent it.