乳制品养殖既是一门艺术，也是一门科学——要尊重两者。
The only constant is change, continuing change, inevitable change, that is the dominant factor in society today. No sensible decision can be made any longer without taking into account not only the world as it is, but the world as it will be.
勇气不是没有恐惧，而是战胜恐惧。
No medicine cures what happiness cannot.
A Jewish man with parents alive is a fifteen-year-old boy, and will remain a fifteen-year-old boy until they die!