“This brings us to Anarchism, which may be described as the doctrine that all the affairs of men should be managed by individuals or voluntary associations, and that the State should be abolished.”

Source: Lectures on The Industrial Revolution in England (1884), p. 219. "Are Radicals Socialists?",
Context: The Radical creed, as I understand it, is this: We have not abandoned our old belief in liberty, justice, and Self-help, but we say that under certain conditions the people cannot help themselves, and that then they should be helped by the State representing directly the whole people. In giving this State help, we make three conditions: first, the matter must be one of primary social importance; next, it must be proved to be practicable; thirdly, the State interference must not diminish self-reliance. Even if the chance should arise of removing a great social evil, nothing must be done to weaken those habits of individual self-reliance and voluntary association which have built up the greatness of the English people. But — to take an example of the State doing for a section of the people what they could not do for themselves — I am not aware that the Merchant Shipping Act has diminished the self-reliance of the British sailor. We differ from Tory Socialism in so far as we are in favour, not of paternal, but of fraternal government, and we differ from Continental Socialism because we accept the principle of private property, and repudiate confiscation and violence. With Mazzini, we say the worst feature in Continental Socialism is its materialism. It is this indeed which utterly separates English Radical Socialists from Continental Socialists — our abhorrence and detestation of their materialistic ideal. To a reluctant admission of the necessity for State action, we join a burning belief in duty, and a deep spiritual ideal of life. And we have more than an abstract belief in duty, we do not hesitate to unite the advocacy of social reform with an appeal to the various classes who compose society to perform those duties without which all social reform must be merely delusive.
To the capitalists we appeal to use their wealth, as many of their order already do, as a great national trust, and not for selfish purposes alone. We exhort them to aid in the completion of the work they have well begun, and, having admitted the workmen to political independence, not to shrink from accepting laws and carrying out plans of social reform directed to secure his material independence.
To the workman we appeal by the memory and traditions of his own sufferings and wrongs to be vigilant to avoid the great guilt of inflicting upon his fellow-citizens the injustice from which he has himself escaped.

Anarchism & American Traditions (1908)

Pt. 1, 9
Social Insurance and Allied Services (1942)

IV, p.47
Science and the Unseen World (1929)

Source: Reflections on Violence (1908), p. 170

Anarchism: Its Philosophy and Ideal (1896)
Context: A different conception of society, very different from that which now prevails, is in process of formation. Under the name of Anarchy, a new interpretation of the past and present life of society arises, giving at the same time a forecast as regards its future, both conceived in the same spirit as the above-mentioned interpretation in natural sciences. Anarchy, therefore, appears as a constituent part of the new philosophy, and that is why Anarchists come in contact, on so many points, with the greatest thinkers and poets of the present day.
In fact, it is certain that in proportion as the human mind frees itself from ideas inculcated by minorities of priests, military chiefs and judges, all striving to establish their domination, and of scientists paid to perpetuate it, a conception of society arises, in which conception there is no longer room for those dominating minorities. A society entering into possession of the social capital accumulated by the labor of preceding generations, organizing itself so as to make use of this capital in the interests of all, and constituting itself without reconstituting the power of the ruling minorities. It comprises in its midst an infinite variety of capacities, temperaments and individual energies: it excludes none. It even calls for struggles and contentions; because we know that periods of contests, so long as they were freely fought out, without the weight of constituted authority being thrown on the one side of the balance, were periods when human genius took its mightiest flight and achieved the greatest aims. Acknowledging, as a fact, the equal rights of all its members to the treasures accumulated in the past, it no longer recognizes a division between exploited and exploiters, governed and governors, dominated and dominators, and it seeks to establish a certain harmonious compatibility in its midst — not by subjecting all its members to an authority that is fictitiously supposed to represent society, not by trying to establish uniformity, but by urging all men to develop free initiative, free action, free association.
It seeks the most complete development of individuality combined with the highest development of voluntary association in all its aspects, in all possible degrees, for all imaginable aims; ever changing, ever modified associations which carry in themselves the elements of their durability and constantly assume new forms, which answer best to the multiple aspirations of all.

Source: The German Ideology (1845-1846), Vol. I, Part 1.

1920s, Speech at College of William and Mary (May 15, 1926)

The Relation of the State to the Invididual (1890)