"The past, like the future, is indefinite and exists only as a spectrum of possibilities."

"The human race is a single, genetic family. When a child is born, it is born into the human race, not into some particular tribe or nation. The human race is one. And we are all brothers and sisters."

"One of the basic rules of the universe is that nothing is perfect. Perfection simply doesn't exist....Without imperfection, neither you nor I would exist."

"The universe is a big place, and we are a small part of it. But we are an important part of it."

"Intelligence is the ability to adapt to change."