It is as impossible to explain the growth of piracy as it is to define precisely the call of the sea. A man is born with a bias in favour of the sea or he is not: there is no possibility of putting that instinct into him if already he has not been endowed with that attitude. So also we know from our own personal experience, every one of us, that whilst some of our own friends fret and waste in sedentary pursuits, yet from the time they take to the sea or become explorers or colonisers they find their true _métier_. The call of the sea is the call of adventure in a specialised form. It has been said, with no little truth, that many of the yachtsmen of to-day, if they had been living in other ages, would have gone afloat as pirates or privateers. And so, if we want to find an explanation for the amazing historical fact that for century after century, in spite of all the efforts which many a nation made to suppress piracy, it revived and prospered, we can only answer that, quite apart from the lust of wealth, there was at the back of it all that love of adventure, that desire for exciting incident, that hatred of monotonous security which one finds in so many natures. A distinguished British admiral remarked the other day that it was his experience that the best naval officers were usually those who as boys were most frequently getting into disfavour for their adventurous escapades. It is, at any rate, still true that unless the man or boy has in him the real spirit of adventure, the sea, whether as a sport or profession, can have but little fascination for him.