嗅觉系统的美在于它既简单又复杂，使我们能够检测和区分几乎无限数量的气味。
The beauty of the olfactory system is that it is both simple and complex, allowing us to detect and discriminate an almost infinite number of odors.
The world has nothing to fear from military ambition in our Government.
"Books are the mirrors of the soul, reflecting our deepest fears and desires."
Fear of something is at the root of hate for others, and hate within will eventually destroy the hater.