In this Autobiography Franklin tells of his own life to the year 1757, when he went to England to support the petition of the legislature against Penn's sons. The grievance of the colonists was a very considerable one, for the proprietaries claimed that taxes should not be levied upon a tract greater than the whole State of Pennsylvania. Franklin was received in England with applause. His experiments in electricity and his inventions had made him known, and the sayings of "Poor Richard" were already in the mouths of the people. But he waited nearly three years before he could obtain a hearing for the matter for which he had crossed the sea. During the delay he visited the ancient home of his family, and made the acquaintance of men of mark, receiving also that degree of Doctor of Civil Law by which he came to be known as Dr. Franklin. In this time, too, he found how prejudiced was the common English estimate of the value of the colonies. He wrote Lord Kames in 1760, after the defeat of the French in Canada: "No one can more sincerely rejoice than I do on the reduction of Canada; and this is not merely as I am a colonist, but as I am a Briton. I have long been of opinion that the _foundations of the future grandeur and stability of the British empire lie in America_; and though, like other foundations, they are low and little now, they are, nevertheless, broad and strong enough to support the greatest political structure that human wisdom ever yet erected. I am, therefore, by no means for restoring Canada. If we keep it all the country from the St. Lawrence to the Mississippi will in another century be filled with British people. Britain itself will become vastly more populous by the immense increase of its commerce; the Atlantic sea will be covered with your trading ships; and your naval power, thence continually increasing, will extend your influence round the whole globe and awe the world!... But I refrain, for I see you begin to think my notions extravagant, and look upon them as the ravings of a madman."