If greatness of purpose,
smallness of means
and astounding results
are the three criteria of human genius, who could dare to compare any great man in modern history with Muhammad (pbuh) ?
The most famous men created arms, laws and empires only. They founded, if anything at all, no more than material powers which often crumbled away before their eyes.
This man Muhammad (pbuh) moved not only armies, legislation, empires, peoples and dynasties, but millions of men; and more than that the altars, the gods, the religions, the ideas, the beliefs and the souls.
On the basis of a Book, every letter of which has become law, he (pbuh) created a spiritual nationality which blended together peoples of every tongue and of every race...
The idea of the unity of God, proclaimed amidst the exhaustion of fabulous theologies, was in itself such a miracle that upon its utterance from his(pbuh) lips it destroyed all the ancient superstitions....
His(pbuh) endless prayers, his(pbuh) mystic conversations with God, his(pbuh) death and his (pbuh) triumph after death: all these attest not to an imposture but to a firm conviction which gave him(pbuh) the power to restore a dogma.
This dogma was twofold, the unity of God and the immateriality of God; the former telling what God is, the latter telling what God is not...
...."Philosopher, Orator, Apostle, Legislator, Warrior, Conqueror of Ideas, Restorer of rational beliefs, of a cult without images; the founder of twenty terrestrial empires and of one spiritual empire, that is Muhammad (pbuh).
As regardless all standards by which human greatness may be measures, we may well ask, is there any man greater than he(pbuh) ?
(Lamartine, Historie de la Turquie, Paris 1854, Vol II pp. 276 - 277)