Page:The Practice of Diplomacy - Callières - Whyte - 1919.djvu/147

 a clever minister will discover for himself, and of which he must give an exact account to his master, for such knowledge is often a sure clue even to the most secret designs. Thus he can by his own observation discover the passions and ruling interests of the prince to whose court he is sent: whether he is ambitious, painstaking, or observant; whether he is warlike or prefers peace; whether he is the real ruler of the country, and if not by whom he is ruled; and in general what are the principal inclinations and the interests of those who have most influence over him. He must also inform himself exactly of the state of the military forces both on land and sea, of the number and strength of fortified places, whether they are always kept in a high state of efficiency and well supplied with ammunition, of the condition of the sea-ports, of his vessels of war, and of his arsenals, of the number of troops which he can put into the field at once, both of cavalry and of infantry, without stripping his fortresses bare of their garrisons. He must know the state of public opinion, whether it is well disposed or discontented; he must keep in his hands the threads of every great intrigue, knowing all the factions and parties into which opinion is divided; he must know the leanings of ministers and other persons in authority in such matters as religion. He should not even neglect the