"A journey is like marriage. The certain way to be wrong is to think you control it."

Learning is not simply the accumulation of knowledge but the transformation of understanding.

To study the mind is to study adaptation in action; every thought is a tool for living.

现在很清楚，杂种形成的种子具有两个分化性状中的一个或另一个，其中一半再次发育成杂种形式，而另一半产生保持恒定并以相等数量接收显性或隐性性状的植物。

市场是一位伟大的老师，但它收取高昂的学费。