Who said "The extension of a term may be indeterminate."?

This quote is attributed to Dummett, Michael.

The extension of a term may be indeterminate. - Dummett, Michael

"The extension of a term may be indeterminate."

Dummett, Michael Literature

Philosopher British 1925–2011

"The meaning of a word is its use in the language."

"Truth is not something that exists independently of human thought."

"Language is the mirror of the mind."

"Understanding requires both logic and intuition."

"The pen is mightier than the sword."

"Literature opens the mind to new worlds"

"The interesting thing about books is that they're made of words."

"Literature captures the essence of what it means to be human."