A contemporary of Christopher Wren, Robert Boyle, and Isaac Newton, and close friend of all but Newton, Robert Hooke (1635-1703), one of the founders of the early scientific revolution, faded into almost complete obscurity after his death and remained there for nearly three centuries. The result has been that his role in the scientific revolution has been almost totally ignored. He was the first professional scientist worthy of the name, working for the young Royal Society of London as its curator of experiments for four decades. He became the Society's intellectual center, and for a while its Secretary, roles which led to confrontation with Newton. He made important contributions to pneumatics, mechanics, microscopy, astronomy, and geology, and was partner to Wren in rebuilding London after the Fire.