Hazrat Muhammad(P.B.U.H) knows how to read & write or not?

I have been in Management Consultancy for over 10 years now, I personally knew some very successfull business owners who still cannot read or write and they have employees who read and write for them, Although it is very risky, but the point here is , IQ and Knowledge of doing certain thing is not depended on reading and writing skills of the one, although it can be an added value but not the mandatory..

Quran is live Miracle, I recall an incident, where a French Sailor ( might be navy person) heard the verses where, Allah Subhan.o.tala was referring the the darkness by giving the example, where the night was cloudy, it was raining and the waves of the ocean was covering every thing. Being a sailor he can imagine the situation, he asked the sailor did ur Prophet (SAAW ever went on voyage, the reciter said no, he never been on voyage, the Sailor said then how come he can give such example, the reciter said, It was not his words, they are the word of Allah which he are reavled to him, to delived it to us.

It is said that the Sailor, did bit more research and accepted Islam.

( i don't know if the above incident is true or not, but it surely tells u the source of the wisdom and knowledge of Prophet (SAAW))