Who said "Language gives us the ability to speak of what is not."?

This quote is attributed to Geach, Peter.

Language gives us the ability to speak of what is not. - Geach, Peter

"Language gives us the ability to speak of what is not."

Geach, Peter Philosophy

Philosopher British 1916–2013

"Truth is not determined by majority vote."

"A proposition is not the same as a sentence."

"Good English is not a matter of following rules."

"The human mind is not a vessel to be filled, but a fire to be kindled."

"I've seen the worst humanity has to offer."

"Sometimes I wonder if the world is worth saving."

"Every choice shapes our destiny."

"Order is the foundation of a good life."