Malcolm Turnbull

Anyone who thinks it's smart to cut immigration is sentencing Australia to poverty.

In economics, one of the most important concepts is 'opportunity cost' - the idea that once you spend your money on something, you can't spend it again on something else.

It is our job above all in politics to tackle the big issues and to explain them, and have the honesty to say to people, 'There are no easy solutions here.'

Nothing that is worth doing can be achieved in a lifetime; therefore we must be saved by hope.

Hollywood is a place where they'll pay you a thousand dollars for a kiss and fifty cents for your soul.

It's perfectly okay if you don't understand every single one of them. For one thing, I make a lot of corny jokes, and you have to be 40 years old to get some of them.