天空才是极限。
A proof is a device for convincing someone else that a mathematical statement is true.
恩泽中可能潜藏祸患,所以得意时要能尽早回头;失败后反而能够成功,因此失意时千万不要气馁。
Protecting marine resources is protecting the future of humanity.
如果知识会造成问题,那么即使透过无知,我们也无法解决这些问题。