科学没有国界，因为知识属于人类，是照亮世界的火炬。
Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.
你每花一块钱购买一些实质性的东西，预计在其寿命结束时要支付一块钱的维修、保养或处理费用。
It is a curious subject of observation and inquiry, whether hatred and love be not the same thing at bottom.
The greatest journeys are those that take us back to ourselves.
贫穷是犯罪的温床。