真正的历史学家是真理的战士。
The true historian is a soldier of truth.
Identify your problems, but give your power and energy to solutions.
The future of grain production lies in sustainable practices that respect both the land and the people who work it.
我只与自己竞争。我的目标是比昨天的自己更好。
拍卖中，规则和竞标者的策略一样决定结果。
An idea that is not dangerous is unworthy of being called an idea at all.
我们不是通过经验学习，而是通过对经验的反思学习。