Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.

The gods have not revealed all things from the beginning to mortals, but, by seeking, men find out better in time.

Sustainability is no longer an option; it's a necessity for the future of dairy farming.

The only real failure in life is not to be true to the best one knows.

合作是解决世界上最紧迫问题的关键。

如果你愿意，可以错误地思考，但在任何情况下都要为自己思考。