The telephone is virtual reality in that you can meet with someone as if you are together, at least for the auditory sense.

By the 2030s, the nonbiological portion of our intelligence will predominate.

Our technology, our machines, is part of our humanity. We created them to extend ourselves, and that is what is unique about human beings.

There is one brain organ that is optimised for understanding and articulating logical processes and that is the outer layer of the brain, called the cerebral cortex. Unlike the rest of the brain, this relatively recent evolutionary development is rather flat, only about 0.32 cm (0.12 in) thick and includes a mere 6 million neurons. This elaborately folded organ provides us with what little competence we do possess for understanding what we do and who we do it.

We'll be able to have very intelligent, little robots with computers going inside our bloodstream, keeping us healthy from inside, destroying cancer at the level of one cell.

In 1999, I said that in about a decade we would see technologies such as self-driving cars and mobile phones that could answer your questions, and people criticized these predictions as unrealistic.

If we could convert 0.03 percent of the sunlight that falls on the earth into energy, we could meet all of our projected needs for 2030.