Just as physical exercise is a well-known and well-accepted means to improve health for anyone, regardless of age or background, so can the brain be put 'into shape' for optimal learning.

It's a simple fact: no individual can be good at everything. Everyone needs people around them who have complimentary sets of skills.

Humans have always used our intelligence and creativity to improve our existence. After all, we invented the wheel, discovered how to make fire, invented the printing press and found a vaccine for polio.

If there is one thing I have learned on this incredible journey we call life, it is this: the sign of a truly successful individual is humility.

Don’t wallow in brainstorming. Time spent fiddling with a business plan or filling up whiteboards with ideas is time that you could spend actually launching your business and seeing if the idea floats. Launching gives you real, solid feedback, instead of the imaginary “what if” scenarios dreamed up in a conference room.

Education should not be about building more schools and maintaining a system that dates back to the industrial revolution. We can achieve so much more, at unmatched scale with software and interactive learning.

I believe that entrepreneurs play an unmatched role and the accelerating pace of innovation is transforming the face of global challenges. You must think about the solution differently when you're trying to impact 1 billion people rather than affecting 1 million people.