追求真理需要相当大的努力，这就是为什么只有很少人愿意出于对知识的热爱而去追求真理，尽管上帝在人的心灵中植入了对这种知识的自然渴望。
The study of truth requires a considerable effort - which is why few are willing to undertake it out of love of knowledge - despite the fact that God has implanted a natural appetite for such knowledge in the minds of men.
To feed the world, we must first respect the resources we have.
良好的教养在于隐藏我们对自己较佳的评价，以及隐藏我们对他人较差的评价。
We don't need perfect knowledge to take sensible actions.