The history of mankind is a record of the struggle for existence under varying climatic conditions.
人类的历史是在不同气候条件下为生存而斗争的记录。
悔恨自己的错误，而且力求不再重蹈覆辙，这才是真正的悔悟。
Mental phenomena are nature's experiments in survival.
We shall never prevent the abuse of power if we are not prepared to limit power in a way which occasionally may prevent its use for desirable purposes.
Breakthroughs happen when you connect the dots others overlook.