解释：以芍药相赠，以文无（一种中药）相招，展现了中药在人际交往中的特殊意义。

No matter how far you travel, you can never get away from yourself.

数学中最深刻的思想往往源于最简单的观察。

The main task of a leader is to create and maintain the competitive advantage of the organization.

The only real joy is the joy of creation.

We are like islands in the sea， separate on the surface but connected in the deep.

Silence is not the absence of sound, but the presence of something deeper.

"The essence of mathematics is not to make simple things complicated, but to make complicated things simple."