人类活动正在成为一种强大的地质力量。
沙漠教会你欣赏生活中最微小的事物。
数学是人类精神最美丽和最强大的创造。
Do not retreat in the face of difficulties, do not shirk responsibility.
The future belongs to those who believe in the beauty of their dreams.
"The truth is rarely pure and never simple."