Who said "Intentionality is the mark of the mental."?

This quote is attributed to Geach, Peter.

Intentionality is the mark of the mental. - Geach, Peter

"Intentionality is the mark of the mental."

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."