Those who saw the workings of the world before anyone else.
Discovered the law of gravitation and the calculus, yet thought he was only gathering pebbles on the shore of the ocean of truth.
Walked to Moscow — and went on to found a university.
By stubbornness and order he found the law of the elements, which became the map of all chemistry.
Discovered polonium and radium, won the Nobel Prize twice, and paid for it with her health.