I don’t need a reason to be strong.

On motivation: "I strongly believe that missionaries make better products. They care more. For a missionary， it's not just about the business. There has to be a business， and the business has to make sense， but that's not why you do it. You do it because you have something meaningful that motivates you."

In mathematics, you don't understand things. You just get used to them.

When you meet with opposition, even if it should be from your husband or your children, endeavor to overcome it by argument and not by authority, for a victory dependent upon authority is unreal and illusory.

物理学家必须拥有生动的想象力，但必须受到严格逻辑的约束。

我年轻时领略过一种高尚的情操，我至今不能忘掉，这是我的烦恼。