Emotional intelligence is what humans are good at and that's not a sideshow. That's the cutting edge of human intelligence.

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.

Machines will follow a path that mirrors the evolution of humans. Ultimately, however, self-aware, self-improving machines will evolve beyond humans' ability to control or even understand them.

So what used to fit in a building now fits in your pocket, what fits in your pocket now will fit inside a blood cell in 25 years.

By the time we get to the 2040s, we'll be able to multiply human intelligence a billionfold. That will be a profound change that's singular in nature. Computers are going to keep getting smaller and smaller. Ultimately, they will go inside our bodies and brains and make us healthier, make us smarter.

Launching a breakthrough idea is like shooting skeet. People's needs change, so you must aim well ahead of the target to hit it.

My mission at Google is to develop natural language understanding with a team and in collaboration with other researchers at Google.