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.

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

All Australians understand that high-quality, reliable and affordable broadband is a critical part of the infrastructure our nation needs to prosper in coming years.

I believe that politicians should speak the truth all the time. Invariably there will be occasions when you make statements that are factually incorrect due to an error.

We learn from every natural disaster. Whether it's a fire or a flood, we learn something from it so we can respond to the next one better.

When politicians offer you something for nothing, or something that sounds too good to be true, it's always worth taking a careful second look.

I don't find myself in moral turmoil. I'm not given to turmoil of any kind.

It is unmanly. It is not some expression of macho virtue. It is the absolute antithesis of this. Real men don't bully women and children. Respect for women ... is so important.

Everything we do as a government is focused on getting help and support for hard-working Australian families. We are standing up for them.

There is a tendency to try to dumb everything down and turn everything into a one-paragraph press release or even less, just a slogan.

Americans understand that they have no stronger ally, no better friend, than Australia.

I believe he was feeling a bit nervous. Possibly it was my costume that took him aback. I was dressed quite well, even elegantly, and looked as if I belonged to the best society.

The Lack of perseverance and effort isn't called Destiny !

[..] the great modern commandment - the eleventh commandment which has wiped out all the others: 'Thou shalt not lose thy job.

By honestly acknowledging your past errors, but never damning yourself for them, you can learn to use your past for your own future benefit.

We never thought we could ever get old.

Lil Wayne is the best rapper on Earth. Can't nobody touch him. He's the only guy who can put out 300 songs a year and they all fire.

Nothing makes you realize you don't know what you want more than getting what you want.

We must pray to God everyday to show we don't forget that all gifts come from Him. But if some wishes remain unfulfilled we must show our confidence in Him, for He knows best.

Each one of us must make his own true way, and when we do, that way will express the universal way.

Get on in life because life will get on without you if you don't keep up.