The sage is one who lives a life according to his own nature, not according to others' values. He has his own vision and the courage to live it.
The sage is rebellious. The saint is obedient, orthodox, conventional, traditional, conformist. The sage is nonconformist, nontraditional, nonconventional, rebellious.
Rebellion is the very taste of his being. He is not dependent on others. He knows what freedom is, and he knows the joys of freedom. The saint will be followed by a big crowd.
The sage will have only the chosen people who will be able to understand him.
The sage will be misunderstood by the masses, the saint will be worshipped. The sage will be condemned by the masses, maybe even murdered. Jesus is crucified and the pope is worshipped. Jesus is a sage and the pope is a saint.