Richard Feynman, Feynman Lectures Chapter 1: Atoms in Motion

Oxford University Scientific Society

If all scientific knowledge were to be destroyed and only one sentence could be passed on to the next generations of humans, it should be ‘all things are made of atoms –little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into each other.’
- Richard Feynman, Feynman Lectures Chapter 1: Atoms in Motion.