杀人一万,自损三千。伤人一语,利如刀割。
【译文】杀人一万,自己也要损失三千。说一句伤害别人的话,就像用刀割别人的心一样。
Psychology must show how mind serves the needs of the organism.
The greatest cruelty is our casual blindness to the despair of others.
The heart of animals is the foundation of their life, the sovereign of everything within them.