而中医大剧《李时珍》的着力点之一也正在于他的躬亲试药，以身试毒的为科学献身精神。

And the Chinese opera "Li Shizhen" one of the focus is also on his drug test Gongqin, who try to poison the spirit of dedication to science.

普通老师照本宣科，好老师解疑答惑，超级棒的老师躬亲示范，伟大的老师点拨引路。——美国作家威廉•亚瑟•沃德。

The mediocre teacher tells. The good teacher explains. The superior teacher demonstrates. The great teacher inspires. -William Arthur Ward.