The tree is made by nature, mathematics by people. And combining the two is creating this beautiful alliance between humanity and nature. That's why my forests are mathematical expansion systems, all of them.

I hate to put tags on things, because tags change, and they change with the requirements made on them.

We use up words as we use up images. We use up everything, and that's good, because it makes us grow.

People don't hurt what they love.

I always was alone. And I'm alone today. It's fine. I have lots of friends, but not in terms of working together.

Society likes to file you away, put you in this or that category. And I never fit any category. Maybe that's why I was left out of a lot of things, or why my work was not really understood, because there was no precedent for it.

Public art existed all along, but ecological art just naturally grew out of my thinking and writings in that area for years. I didn't get involved in it; I started what then became a movement.