黑色是光的颜色,不是黑暗的颜色。
The only limits you have are the ones you place on yourself.
The advancement of mathematics is due to those who are driven not by the desire for application but by the joy of discovery.
释义:求学之人若不勤奋,必然是其志向不坚定。
The world is moving so fast these days that the man who says it can't be done is generally interrupted by someone doing it.