Now, no matter how far-seeing a minister may be, it is impossible for him to foresee everything or to give such ample and at the same time precise instructions to his negotiators as to guide them in all circumstances which may arise. It is therefore of the first importance that the newly appointed diplomatist travelling to a far country should devote all his time before his departure to the discovery of the real intentions and designs of his own Foreign Office. In a word, he should saturate his mind with the thoughts of his master. He should not only consult those who have discharged diplomatic duties at the foreign court to which he is about to proceed, but should make it his especial care to keep touch with those who have lived in the country in any quality whatsoever, and to acquire from them all the knowledge which they may possess. Even the humblest of such persons may be able to give him information which will help him to regulate his conduct abroad. And before his departure he should certainly strike up an acquaintance with the ambassador representing the country to which he is about to proceed, in order that he may get from him private letters of recommendation, and further, in order that he may persuade him of his own earnest desire to do all in his power to establish good relations between the two states. He should let it be known to the foreign ambassador in question that he will lose no opportunity of bearing witness to the success of his mission and to the esteem which he has won at home. In so doing he will be able rapidly to acquire new and powerful friends in his new sphere of labour. For it is a commonplace of human experience that men will do as they are done by: reciprocity is the surest foundation of friendship. [Sidenote: _Choice of a Staff._]