Destructive thoughts and emotions undermine the very causes of peace and happiness. If you think clearly about it, it makes no sense to think you’re seeking happiness, if you do nothing to restrain angry, spiteful, and malicious thoughts and emotions.
Any issue, including political, economic and religious activities human beings pursue in this world, should be fully understood before we pass our judgement. Therefore, it is very important to know the causes. Whatever the issue, we should be able to see the complete picture. This will enable us to comprehend the whole story.
The antidote to hatred in the heart, the source of violence, is tolerance. Tolerance is an important virtue of bodhisattvas [enlightened heroes and heroines] - it enables you to refrain from reacting angrily to the harm inflicted on you by others. You could call this practice "inner disarmament," in that a well-developed tolerance makes you free from the compulsion to counterattack. For the same reason, we also call tolerance the "best armor," since it protects you from being conquered by hatred itself.
We are visitors on this planet. We are here for one hundred years at the very most. During that period we must try to do something good, something useful, with our lives. if you contribute to other people's happiness, you will find the true meaning of life.