The beauty of mathematics is that it allows us to abstract away the complexities of the real world and focus on the underlying principles.

平凡与非凡的区别就在于那一点额外的努力。

I don't know if Mama was right or if it...it's Lieutenant Dan. I don't know... if we each have a... destiny... or if we're all just floating around accidental-like on a breeze... but I...I think... maybe it's both. Maybe both get happening at the same time.

Happiness lies in the joy of achievement and the thrill of creative effort.

I don't know what I would do if I didn't act. I think I would go mad.