These words were written by Hilaire Belloc in The Great Heresies in 1938.
It's remarkable how they can predict current events, even to the point of "our sons or our grandsons" which indeed we are.
The capability of making accurate predictions is considered as a sign, as in science, of having a correct hypothesis to explain the phenomena or the events, which obviously Belloc had.
Today we also have people with a deep knowledge and correct understanding of Islam who are making the right predictions derived from their true theories about Islam. What these authors say, for instance, is that the so-called "Arab Spring " will be playing in the hands of the Islamists, which they said from its inception and they are already being proven right, while the mainstream media and prevailing politically-correct opinion sees it as a triumph for democracy, which we can already see that it's not.
So, who makes the most accurate predictions and therefore best understands Islam?