Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad.

做数学的过程比结果更重要。

量子力学的本质在于它提供了一个数学框架，用于描述原子和亚原子层面上物质的行为。

"Human behavior is the product of evolved psychological mechanisms that process information from the environment."

The moment the child is born, stimuli begin to play upon him.

The only real joy is the joy of creation.

勇敢是美德之首。