Translation of "Dao" in Chinese

Gao Dao is usually really suave, but he seems completely smitten in front of his girlfriend.

高岛平时虽然一副很帅气的样子，但是在他女友面前却是一副神魂颠倒的样子。

He taught contemplation as a means of spiritual purification and the attainment of the Dao, a principle that signifies the highest spiritual ideals of mankind.

他为精神的洁净和获得道的方法教深思，道是表示人类最高的精神理想的一个原则。