Nearly all inventions are not recognised for their positive side either when they're made. So, for example, scientists didn't go out to design a CD machine: they designed a laser. But we got all sorts of things from a laser which we never remotely imagined, and we're still finding things for a laser to do.

I went to school with butterflies of fear every day for years - from primary school onwards - not just worried about being bullied by classmates, but by teachers.

By discovering how our minds work, we can improve our learning power and unlock our true potential.

My first vote was for a communist in east London when I was a medical student. But I've voted Tory, Labour and Lib Dem in my time.