All violence consists in some people forcing others, under threat of suffering or death, to do what they do not want to do.
所有的暴力都包含一些人强迫另一些人，在痛苦或死亡的威胁下，做他们不想做的事。
最有效的领导者是那些以身作则的人。
The quality of an organization is determined by the quality of its leadership.
数学与物理之间的相互作用带来了科学上一些最深刻的见解。