The dinosaurs became extinct because they didn't have a space program. And if we become extinct because we don't have a space program, it'll serve us right!
释义：无论是贤能还是平庸的人，一旦进入朝廷就容易遭到嫉妒；无论是美丽还是平常的女子，一旦进入后宫就容易遭受妒忌。
Sustainability and efficiency must go hand in hand in modern energy production.
消灭一个民族的第一步是抹去它的记忆。摧毁它的书籍、文化和历史。
Stay true to yourself and never let anyone tell you that you can't do something.
We all complete. Maybe none of us really understand what we’ve lived through, or feel we’ve had enough time.
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.