死者是看不见的，但他们并不缺席。

Success is not final, failure is not fatal: It is the courage to continue that counts.

I'm the reason your earth won't turn.

To be African is to be modern - this is the central paradox we must embrace.

"It is not easy to free myth from reality."

解释：情绪变化会影响身体生理反应，如贪心时口水增多，悲哀时流泪，体现了情绪与健康的关联。

The intersection of computer science and mathematics is where the most exciting breakthroughs are happening.

找到方法。