“We are accustomed to speak of ideas as reproduced, as passed from mind to mind, as similar or dissimilar to one another, and, in short, as if they were substantial things; nor can any reasonable objection be raised to such expressions.”
The Law of Mind (1892)
Context: We are accustomed to speak of ideas as reproduced, as passed from mind to mind, as similar or dissimilar to one another, and, in short, as if they were substantial things; nor can any reasonable objection be raised to such expressions. But taking the word "idea" in the sense of an event in an individual consciousness, it is clear that an idea once past is gone forever, and any supposed recurrence of it is another idea. These two ideas are not present in the same state of consciousness, and therefore cannot possibly be compared.
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Charles Sanders Peirce 121
American philosopher, logician, mathematician, and scientist 1839–1914Related quotes

"Man's Glassy Essence" in The Monist, Vol. III, No. 1 (October 1892)
Context: The consciousness of a general idea has a certain "unity of the ego" in it, which is identical when it passes from one mind to another. It is, therefore, quite analogous to a person, and indeed, a person is only a particular kind of general idea.

The Law of Mind (1892)

The Usurpation Of Language (1910)

Source: Aphorisms and Reflections (1901), p. 220

The Law of Mind (1892)

“Objections fatal to one mind are futile to another.”
The Education of Henry Adams (1907)

U. Eco (1990), The limits of Intepretation, as quoted in Thomas A. Sebeok, Jean Umiker-Sebeok (2020), The Semiotic Web 1991: Biosemiotics https://books.google.it/books?id=NUK0DwAAQBAJ&pg=PA53.
Source: Your Forces and How to Use Them (1912), Chapter 6, p. 91–2