Playing around with different trees, and particle tools, such as
rain and wind.
"Equations are just the boring part of mathematics. I attempt to see things in terms of geometry."
As quoted in Stephen Hawking: A Biography (2005) by Kristine Larsen, p. 43
"It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change."
"Two billion people around the world have no access to reliable electricity. Imagine if
this could be provided with energy that was both cheap and green."