A teacher must have a healthy body, the skills of a farmer, the mind of a scientist, the interest in art, and the spirit of social reform.
教师必须具有健康的体魄,农人的身手,科学的头脑,艺术的兴味,改革社会的精神。
小人反复无常,不可深交。  
In computing, the mean time to failure keeps getting shorter.
The first step towards philosophy is incredulity.
我们要做的是让生态化成为每个人的生活常态。