Hermann von Helmholtz

The older view of the nature of heat was that it is a substance, very fine and imponderable indeed, but indestructible, and unchangeable in quantity, which is an essential fundamental property of all matter.

I then endeavoured to show that it is more especially in the thorough conformity with law which natural phenomena and natural products exhibit, and in the comparative ease with which laws can be stated, that this difference exists.

When I - when I was going to school, I knew how to read, write, add and subtract and I - I basically said, 'What else do I need? I'm never going to be able to go to college. I'm not going to be able to afford to go to college. I'm not going to be able to get a scholarship.'