“Undoubtedly, such expressions as, 'Turn yourselves,' &c. relate to the free power which every man has to will; but if Pelagius had half an eye, he might see that God, in giving the precept which directs us to turn unto him, influences also the human will, and excites it to action; not, indeed, in opposition our free choice, but the reverse, as I have all along maintained. Hence it is written, 'Without me ye do nothing.' And again, 'I laboured more abundantly than they all, yet not I, but the grace of God which with me.' And lastly, 'I do not this for your sakes, O house of Israel, but for mine holy name's sake. Then will I sprinkle clean water upon you, and shall be clean; and I will cleanse you from your idols. A new heart also will I give you, and a new spirit will put within you; and I will take away the stony heart, and will give you a heart of flesh.”

Lam v. 21
De causa Dei contra Pelagium

I Corinthians 9:22 (KJV)
First Epistle to the Corinthians
Context: Though I be free from all men, yet have I made myself servant unto all, that I might gain the more. And unto the Jews I became as a Jew, that I might gain the Jews; to them that are under the law, as under the law, that I might gain them that are under the law; To them that are without law, as without law, (being not without law to God, but under the law to Christ,) that I might gain them that are without law. To the weak became I as weak, that I might gain the weak: I am made all things to all men, that I might by all means save some.

Mont Saint Michel and Chartres (1904)

1920s, The Genius of America (1924)

Source: Patriotism and Christianity http://en.wikisource.org/wiki/Patriotism_and_Christianity (1896), Ch. 17
Context: One free man will say with truth what he thinks and feels amongst thousands of men who by their acts and words attest exactly the opposite. It would seem that he who sincerely expressed his thought must remain alone, whereas it generally happens that every one else, or the majority at least, have been thinking and feeling the same things but without expressing them.
And that which yesterday was the novel opinion of one man, to-day becomes the general opinion of the majority.
And as soon as this opinion is established, immediately by imperceptible degrees, but beyond power of frustration, the conduct of mankind begins to alter.
Whereas at present, every man, even, if free, asks himself, "What can I do alone against all this ocean of evil and deceit which overwhelms us? Why should I express my opinion? Why indeed possess one? It is better not to reflect on these misty and involved questions. Perhaps these contradictions are an inevitable condition of our existence. And why should I struggle alone with all the evil in the world? Is it not better to go with the stream which carries me along? If anything can be done, it must be done not alone but in company with others."
And leaving the most powerful of weapons — thought and its expression — which move the world, each man employs the weapon of social activity, not noticing that every social activity is based on the very foundations against which he is bound to fight, and that upon entering the social activity which exists in our world every man is obliged, if only in part, to deviate from the truth and to make concessions which destroy the force of the powerful weapon which should assist him in the struggle. It is as if a man, who was given a blade so marvelously keen that it would sever anything, should use its edge for driving in nails.
We all complain of the senseless order of life, which is at variance with our being, and yet we refuse to use the unique and powerful weapon within our hands — the consciousness of truth and its expression; but on the contrary, under the pretext of struggling with evil, we destroy the weapon, and sacrifice it to the exigencies of an imaginary conflict'.

Source: The Ordeal of Change (1963), Ch. 15: "The Unnaturalness Of Human Nature"
Context: One should see the dominant role of the weak in shaping man's fate not as a perversion of natural instincts and vital impulses, but as the starting point of the deviation which led man to break away from, and rise above, nature — not as degeneration but as the generation of a new order of creation.
The corruption inherent in absolute power derives from the fact that such power is never free from the tendency to turn man into a thing, and press him back into the matrix of nature from which he has risen. For the impulse of power is to turn every variable into a constant, and give to commands the inexorableness and relentlessness of laws of nature. Hence absolute power corrupts even when exercised for humane purposes. The benevolent despot who sees himself as a shepherd of the people still demands from others the submissiveness of sheep. The taint inherent in absolute power is not its inhumanity but its anti-humanity.

Source: The Memorial and Instructions, p. 205

Source: An Essay on The Principle of Population (First Edition 1798, unrevised), Chapter V, paragraph 23, lines 3-7