The naturalist who spent twenty years hunting objections to his own theory before he dared to publish it.
He pointed a better eye at the sky and rolled bronze balls down planes until nature confessed the law of falling bodies.
He reduced falling apples and wheeling planets to one law — and demanded every cause be proved from the phenomena, or confessed unknown.
The bookbinder's apprentice who found the field — and never learned the mathematics that would prove him right.