The old dreams were good dreams； they didn't work out， but I'm glad I had them.
旧梦是好梦，没有实现，但是我很高兴我有过这些梦。
我不是最聪明的人，但我是最努力的人。
If you're afraid to fail then you're probably going to fail.
Rigor in proof is what separates mathematics from all other sciences.
A book is a dream that you hold in your hand.
Collaboration across borders is key to solving global food security challenges.