James Lovelock

We have . . . defined Gaia as a complex entity involving the Earth’s biosphere, atmosphere, oceans, and soil: the totality constituting a feedback or cybernetic system which seeks an optimal physical and chemical environment for life on this planet.

Houston, we’ve had a problem.

There are people who make things happen, there are people who watch things happen, and there are people who wonder what happened. To be successful, you need to be a person who makes things happen.