The best time to plant a tree was 20 years ago. The second best time is now.
种一棵树最好的时间是20年前,第二好的时间是现在。
The realization that electronic properties can be topologically protected has revolutionized our understanding of solid-state physics.
Contemplating the weaknesses of others is easy; contemplating the weaknesses in yourself is hard, but it pays a much higher reward.
解读:这是诙谐调侃,意在缓解人们自我否定时的低落情绪,用幽默方式鼓励换个视角看自己,重拾轻松心态。