I would like to quote only two verses of Holy Quran:
1) There is no compulsion in religion (2:256)
2) Whoever kills a human being, unless it be for murder or for couseing mischief in the land, it is as though he has killed all of mankind and whoever saves alive, it is as though he saved the whole of mankind (5:32)
Above quoted versus of Holy Quran clearly shows the peaceful behavior of religion of Islam. If some bad muslims like Taliban or Osama kills innocent peoples then please don't blame the religion of Islam or the Holy Quran. It was only fault of that bad Muslims not the fault of whole religion.
If anyone watched the documentary I posted you'd realize why those quotes don't mean shit. Mohammad made a rule that if there are 2 contradictory statements then the later one is corrected because "God can change his mind, because he's god after all".
Mohammed made many peaceful writings while living in Mecca because he was not yet a warlord and lived around other religions.. and most of all he was just getting started.
But as soon as he moved to Medina and became a violent warlord and became very powerful all statements turned warlike. And since that came later, his warlike statements win. There is no contradiction to be argued over because Mohammad told people how to interpret the writings. The later writings win.
That quote of yours is always the one apologists use.. but anyone who knows anything about Islam knows it's bullshit.