着眼长期，思考世界上正在发生的结构性变化。
Mathematics is a creative endeavor, just like art or music.
"The beauty of quantum mechanics lies in its ability to reveal the hidden connections between seemingly unrelated phenomena."
一只眼睛的人可以用来看水平仪，有毒的石头可以用来治疗痈疽。
解释：药物之间有阴阳、子母、兄弟等配对关系，说明药物配伍的原理。