I said that the oceans were sick but they're not going to die. There is no death possible in the oceans - there will always be life - but they're getting sicker every year.

I experimented with all possible maneuvers-loops, somersaults and barrel rolls. I stood upside down on one finger and burst out laughing, a shrill, distorted laugh. Nothing I did altered the automatic rhythm of the air. Delivered from gravity and buoyancy, I flew around in space.

The biggest obstacle was mixing abortion with overpopulation. These are two things that have nothing to do with each other.

People protect what they love.

We have to prepare for what life could become in 40 years. We need to outline what is possible and what is impossible with the non-renewable resources of the Earth. What role will technological improvement play? Taking all this into account, what kind of life can we produce in the best way for 10 billion people? That's a problem that needs to be solved.

The happiness of the bee and the dolphin is to exist. For man it is to know that and to wonder at it.

I was playing when I invented the aqualung. I think play is the most serious thing in the world.