Sourced
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
Source: Man and Superman, "Maxims for Revolutionists" (1903)
Authors / George Bernard Shaw
Shaw wrote more than sixty plays and used their prefaces to argue with everyone about everything. Alongside Wilde he tops the Oxford list of most-quoted humorists, and many of his best lines come from the "Maxims for Revolutionists" appended to Man and Superman.