Human intelligence is a marvelous, subtle, and poorly understood phenomenon. There is no danger of duplicating it anytime soon.

The critical thing in developing software is not the program, it's the design. It is translating understanding of user needs into something that can be realized as a computer program.

I routinely failed to understand that 'simple and straightforward' would have been a much better product strategy for Lotus.

I believe in having an impact in doing things.

A bridge is born of necessity, but it must establish its own identity. It should harmonize with its surroundings, and the design must transcend the purely local and transform the setting.

The idea of transformation - playing something I'm not - is the bit I enjoy most about acting.

I first learned the power of a Labour government to transform lives growing up in my hometown of Stockport.

When I started out in Facebook, it had only 20 people. I saw it grow to a thousand employees and from five million users to over a billion users. I saw it evolve from a service that served college students to one that served the world.