The four worst words in the English language are, "I told you so."

[NNadir]

3. Well, I spent the last 11 years thinking about what might be done.

I have convinced myself that the carbon cycle can be closed, and didn't spend it worrying if it would be closed.

It is enough to know what is possible.

It would have been easy to sit in a corner, shake my head at "the fools," with an air of superciliousness.

"Hope," my friend, is a lazy and frankly useless word if it is divorced from imagination. One has no right to hope if one has no imagination, imagination for good, not for bad.

Nice to see you again though. You haven't changed at all. I think that's a little sad, because I believe one should stop changing when one dies and not before.

I'll stop changing when I die, but on the way out the door, life's door, I've had the great pleasure of sharing my ideas with my son, a fine engineer and scientist, welding alloys right now while being pushed, by his Dad, to the heat equation and equations of state for supercritical fluids.

Yesterday I woke up and started thinking how wonderful zirconium tetrafluoride is. These kinds of things make life worth living.

I'll be gone soon enough from the world, but I think the coming generation will be a great generation, if only because their challenges will be so great.

The world is so beautiful it must be saved from itself and cynicism and schadenfreude are a cause, not a result.