“He regards it, with many moderns, as a state of things, not a thing; a convenient word denoting the sense of personality, of individual identity.”

Source: Philosophical Papers (1979), p. 38.

Source: One is A Crowd: Reflections of An Individualist (1952), p. 6

On Contradiction (1937)
Original: (zh-CN) 就人类认识运动的秩序说来，总是由认识个别的和特殊的事物，逐步地扩大到认识一般的事物。人们总是首先认识了许多不同事物的特殊的本质，然后才有可能更进一步地进行概括工作，认识诸种事物的共同的本质。

"Totalitarianism and the Virtue of the Lie", as quoted in Is God Happy? Selected Essays (2013), Basic Books, p. 57

Source: Man for Himself (1947), Ch. 3; in Ch. 2 of his later work The Art of Loving (1956) a similar statement is made :
Respect is not fear and awe; it denotes, in accordance with the root of the word (respicere = to look at), the ability to see a person as he is, to be aware of his unique individuality. Respect, thus, implies the absence of exploitation. I want the loved person to grow and unfold for his own sake, and in his own ways, and not for the purpose of serving me.

Source: The Theory of Business Enterprise, 1904, p. 306

Quoted as the opening passage of "BOOK ONE: The Functions of Language" in Language in Thought and Action (1949) by S. I. Hayakawa, p. 3
Words and Their Meanings (1940)
Context: A great deal of attention has been paid … to the technical languages in which men of science do their specialized thinking … But the colloquial usages of everyday speech, the literary and philosophical dialects in which men do their thinking about the problems of morals, politics, religion and psychology — these have been strangely neglected. We talk about "mere matters of words" in a tone which implies that we regard words as things beneath the notice of a serious-minded person.
This is a most unfortunate attitude. For the fact is that words play an enormous part in our lives and are therefore deserving of the closest study. The old idea that words possess magical powers is false; but its falsity is the distortion of a very important truth. Words do have a magical effect — but not in the way that magicians supposed, and not on the objects they were trying to influence. Words are magical in the way they affect the minds of those who use them. "A mere matter of words," we say contemptuously, forgetting that words have power to mould men's thinking, to canalize their feeling, to direct their willing and acting. Conduct and character are largely determined by the nature of the words we currently use to discuss ourselves and the world around us.

On The Algebra of Logic (1885)
Context: Any character or proposition either concerns one subject, two subjects, or a plurality of subjects. For example, one particle has mass, two particles attract one another, a particle revolves about the line joining two others. A fact concerning two subjects is a dual character or relation; but a relation which is a mere combination of two independent facts concerning the two subjects may be called degenerate, just as two lines are called a degenerate conic. In like manner a plural character or conjoint relation is to be called degenerate if it is a mere compound of dual characters.
A sign is in a conjoint relation to the thing denoted and to the mind. If this triple relation is not of a degenerate species, the sign is related to its object only in consequence of a mental association, and depends upon a habit. Such signs are always abstract and general, because habits are general rules to which the organism has become subjected. They are, for the most part, conventional or arbitrary. They include all general words, the main body of speech, and any mode of conveying a judgment. For the sake of brevity I will call them tokens.

1840s, Heroes and Hero-Worship (1840), The Hero as Man of Letters