Models can easily become so complex that they are impenetrable, unexaminable, and virtually unalterable.

Denmark, the Netherlands and Germany have detailed plans to cut their greenhouse emissions by 20 to 50 percent.

There have been high crimes and misdemeanors, but they have been committed by the special prosecutor and the Congress, not the president.

A grand jury hears only one side - that of the prosecutor

Scientists worldwide agree that the reduction needed to stabilize the climate is actually more like 80 percent.

You may be able to fool the voters, but not the atmosphere.

A knowledgeable and courageous U.S. president could help enormously in leading the world's nations toward saving the climate.

Calculating how much carbon is absorbed by which forests and farms is a tricky task, especially when politicians do it.

There are no separate systems. The world is a continuum. Where to draw a boundary around a system depends on the purpose of the discussion.

We can't control systems or figure them out. But we can dance with them!

Glaciers are almost gone from Glacier National Park

In my silence and stillness, my soul dances with the ecstasy of life.

Take love and kindness with you, wherever you go.

Love has no fear, willing to take on anyone. But how much we fear love!

Life is about choosing, experiencing, learning, and choosing again.

Politicians are a breed of the human race who believe they know everything

There are very few things that can be proved rigorously in condensed matter physics.

I'm always impressed with what young people can do before older people tell them it's impossible

Work, look for peace and calm in work: You will find it nowhere else. Pleasures flit by -- they are only for yourself; work leaves a mark of long-lasting joy, work is for others.

Refrain from drink which is the source of all evil-and the ruin of half the workmen in this Country.

I learned to write with my desk in the living room, next to the TV. But mostly in my head, and I try to be able to do it under any circumstances.