"If man is to survive, he will have learned to take a delight in the essential differences between men and between cultures. He will learn that differences in ideas and attitudes are a delight, part of life's exciting variety, not something to fear.
"That's been a question, one of the big questions in my life. 'What is a human?' What are the elements that make a human?' It's a search for...how many elements do you get before you say, "Yes, it's human," where before you were saying it's not human." — creator of Star Trek, Gene Roddenberry.