正是通过观察和反思的力量，人们才能找到方法。所以我们必须不断地挖掘和钻研。

断奶在幼儿生命中是个重要的转折点，我们不该让孩子继续吸吮而不咀嚼食物。

友情は、時には言葉を超えた理解を生む。

Psychological understanding comes from seeing function in action.

The key to managing complexity is to focus on the interfaces between components, not their internal details.

True freedom is not about doing what you want, but about not doing what you don't want to do.