运气不好时金子可能变成铁，运气到来时铁也可能变成金。
The most profound technologies are those that become invisible because they are so deeply embedded in our lives.
科学的目标不是事物本身，而是事物之间的关系。
一个人懒惰又奢侈，生活就会贫困；勤劳而节俭，生活就会富足。
Success is no accident. It is hard work, perseverance, learning, studying, sacrifice and most of all, love of what you are doing.
Conflict is the gadfly of thought. It stirs us to observation and memory. It instigates to invention. It shocks us out of sheeplike passivity, and sets us at noting and contriving.