In a recent interview on ABC’s Q&A program, Bill Gates gave viewers a glimpse of what makes him tick. He said that his main mission is to rid the world of polio and he believes he has only three countries to go. While in Australia recently for 14 hours, he managed to convince Prime Minister Julia Gillard to spend another $80 million on his polio crusade.

When asked about how the Bill & Melinda Gates Foundation invests in companies like oil companies, Gates said, “I don’t endorse every action of those we have invested in – we are not the court of justice.” But he did mention that the Foundation doesn’t invest in tobacco or weapons companies.

For anyone who was wondering, Bill Gates doesn’t plan to clone himself or use cryogenics. As he said, “Life is great but you have to make room for people who come after you.”

He explained that the next major focus for the Foundation will be the cervical cancer vaccine that has been pioneered by Australian scientist Ian Frazer.