“A man discovers what he is actually worth in this world when he faces society as a man, without money, name, or powerful connections, stripped of all but his native potentialities. He soon finds that nothing has less weight than his human qualities. They are prized so low that the market does not even list them. Strict science, which acknowledges man only as a biological concept, reflects man’s lot in the actual world; in himself, man is nothing more than a member of a species. In the eyes of the world, the quality of humanity confers no title to existence, nay, not even a right of sojourn. Such title must be certified by special social circumstances stipulated in documents to be presented on demand.”

"A Lesson for the Day; or The Christianity of Christ, of the Church, and of Society" in The Dial (October 1940), p. 196.
Context: Every man has at times in his mind the Ideal of what he should be, but is not. This ideal may be high and complete, or it may be quite low and insufficient; yet in all men, that really seek to improve, it is better than the actual character. Perhaps no one is satisfied with himself, so that he never wishes to be wiser, better, and more holy. Man never falls so low, that he can see nothing higher than himself.

"The Contest in America," Fraser’s Magazine (February 1862); later published in Dissertations and Discussions (1868), vol.1 p. 26
Context: War is an ugly thing, but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth a war, is much worse. When a people are used as mere human instruments for firing cannon or thrusting bayonets, in the service and for the selfish purposes of a master, such war degrades a people. A war to protect other human beings against tyrannical injustice; a war to give victory to their own ideas of right and good, and which is their own war, carried on for an honest purpose by their free choice, — is often the means of their regeneration. A man who has nothing which he is willing to fight for, nothing which he cares more about than he does about his personal safety, is a miserable creature who has no chance of being free, unless made and kept so by the exertions of better men than himself. As long as justice and injustice have not terminated their ever-renewing fight for ascendancy in the affairs of mankind, human beings must be willing, when need is, to do battle for the one against the other.

"A Grammarian's Funeral", line 115.
Men and Women (1855)

Source: Orlando: A Biography (1928), Ch. 3
Context: No passion is stronger in the breast of man than the desire to make others believe as he believes. Nothing so cuts at the root of his happiness and fills him with rage as the sense that another rates low what he prizes high. Whigs and Tories, Liberal party and Labour party — for what do they battle except their own prestige?

The Dragon in the Sword (1986)
Source: Book 1, Chapter 4 (p. 509)

Mark Twain and I by Opie Read

The Educational Theory of Immanuel Kant (1904)
Context: Man has his own inclinations and a natural will which, in his actions, by means of his free choice, he follows and directs. There can be nothing more dreadful than that the actions of one man should be subject to the will of another; hence no abhorrence can be more natural than that which a man has for slavery. And it is for this reason that a child cries and becomes embittered when he must do what others wish, when no one has taken the trouble to make it agreeable to him. He wants to be a man soon, so that he can do as he himself likes.

Part III : Selection on Education from Kant's other Writings, Ch. I Pedagogical Fragments, # 62