The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.
仅仅那山学会下一而是不够的，种大需里当上如有阳光、自由，和一点花的芬芳。
Fruit cultivation must respect the laws of nature, technology is only an auxiliary means.