In July, 1764, he published his gravest and most moderate pamphlet, _The Rights of the British Colonies Asserted and Proved_. Of all his political writing, this is the most sedate. It has even a tone of solemnity. Indeed, its moderation of tone, at the time, gave considerable offence to some of his own associates. The pamphlet was said to have satisfied nobody. Yet it gave food for thought to everybody; and it is the one work of Otis on which rests his reputation as a serious political thinker. The real object of Otis in this powerful pamphlet was not to bring about a revolution, but to avert one. But its actual effect was to furnish the starting-point for the entire movement of revolutionary reasoning, by which some two millions of people were to justify themselves in the years to come, as they advanced along their rugged and stormy path toward independence. It became for a time one of the legal text-books of the opponents of the ministry; it was a law-arsenal, from which other combatants, on that side, drew some of their best weapons. It expounded, with perfect clearness, even if with some shrinking, the constitutional philosophy of the whole subject; and it gave to the members of a conservative and a law-respecting race a conservative and a lawful pretext for resisting law, and for revolutionising the government. _John Adams._--Among the most striking of the literary responses to the news that, in disregard of all appeals from America, the Stamp Act had become a law, was one by a writer of extraordinary vigour in argument, of extraordinary affluence in invective, who chose to view the whole problem as having logical and historical relations far more extensive than had then been commonly supposed. This writer was John Adams, then but thirty years old, a rising member of the bar of Massachusetts, already known in that neighbourhood for his acuteness, fearlessness, and restless energy as a thinker and for a certain truculent and sarcastic splendour in his style of speech. To the very end of his long life, even his most offhand writings, such as diaries and domestic letters, reveal in him a trait of speculative activity and boldness. With the exception of Jefferson, he is the most readable of the statesmen of the Revolutionary period. A series of four essays by John Adams, which were first published, though without his name and without any descriptive title, in _The Boston Gazette_, in August, 1765, by their wide range of allusion, their novelty, audacity, eloquence, by the jocular savagery of their sarcasms on things sacred, easily and quickly produced a stir, and won for themselves considerable notoriety. In 1768, they were welded together into a single document, and as such were published in London under the somewhat misleading title of _A Dissertation on the Canon and the Federal Law_.