The essence of mathematics lies in its freedom.
数学的本质在于其自由性。
I dream that my son will grow up to be a good person, a free person. I dream that someday you will return to revisit the land of our childhood. I dream that flowers will bloom in the streets again...and kites will fly in the skies!
The man who does not read has no advantage over the man who cannot read.
我学会了不能控制一切，有时候你只能放手。
Perhaps you are overvaluing what you don’t have and undervaluing what you do.
A proof of a proposition is a process the nature of which is such as to produce in us a belief in that proposition.