His adroitness in intrigue and his fascinating manners were exceptional even in an age when such qualities formed part of every statesman's education; but the characteristics which ensured him success in the House of Lords and in the royal closet led to failure in his attempts to understand the feelings of the mass of his countrymen.
As a diplomatist he displayed many brilliant qualities - adroitness in negotiation, incisiveness in argument and elegance in style.
Nevertheless the mountain tribes who inhabited the higher parts of the Caucasus were still independent, and their subjugation cost Russia a sustained effort of thirty years, during the course of which her military commanders were more than once brought almost to the point of despair by the tenacity, the devotion and the adroitness and daring which the mountaineers displayed in a harassing guerilla warfare.
The lower estates murmured at the imposition of fresh burdens; and Charles had need of all his adroitness to persuade them that his demands were reasonable and necessary.
It soon became necessary to create the important post of chief dragoman at the Porte, and there was no choice save to appoint a Greek, as no other race in Turkey combined the requisite knowledge of languages with the tact and adroitness essential for conducting diplomatic negotiations.