The cycle of poverty begins with the abandonment of hope.

不要害怕冒险——大多数伟大的发明都来自大胆的实验。

"Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful."

"Every discovery is a step closer to understanding the universe."

逻辑学的研究是对正确推理原则的研究。