...a third [of three] had died in his bunk of natural causes--for a dagger in the heart quite naturally ends one's life.

What common people call beauty is essentially nature. The moment nature abandons you, your beauty is lost forever.

That's rather a broad idea," I remarked. "One's ideas must be as broad as Nature if they are to interpret Nature," he answered.

Your nature is not the problem. The problem is that you have become alienated from your nature -- from your power source.

Sci-fi doesn't show me much about alien's nature but shows a lot about North American nature.

Science's domain is the natural. If you want to understand the natural world and be sure you're not misleading yourself, science is the way to do it.

Natural gas is hemispheric. I like to call it hemispheric in nature because it is a product that we can find in our neighborhoods.

The duty of man is the same in respect to his own nature as in respect to the nature of all other things, namely not to follow it but to amend it.

“...a third [of three] had died in his bunk of natural causes--for a dagger in the heart quite naturally ends one's life.”

Whatever you are by nature, keep to it; never desert your line of talent. Be what nature intended you for, and you will succeed.