My dad was an incredibly brave man, completely dedicated to his family, with a love for all. If I could be half the dad he was, to my children, then that will be an achievement in itself. He died 14 months exactly to the start of the 2012 Olympics. I hope he will be watching and waving his big union jack in London from somewhere else. I love you so much dad.

No work-family balance will ever fully take hold if the social conditions that might make it possible - men who are willing to share parenting and housework, communities that value work in the home as highly as work on the job, and policymakers and elected officials who are prepared to demand family-friendly reforms - remain out of reach.

My father had been opposed to my flying from the first and had never flown himself. However, he had agreed to go up with me at the first opportunity, and one afternoon he climbed into the cockpit and we flew over the Redwood Falls together. From that day on I never heard a word against my flying and he never missed a chance to ride in the plane.

There are so many different elements to surfing. Small waves, big waves, long boards, short boards. This makes it a sport you can share with people. It's not just a solitary thing - it's become a family thing, too. It's about exercising and passing something on from father to son, and from mother to daughter.

Motherhood isn't just a series of contractions; it's a state of mind. From the moment we know life is inside us, we feel a responsibility to protect and defend that human being.

As the family goes, so goes the nation and so goes the whole world in which we live.