Who said "The greatest truths are often the hardest to express."?

This quote is attributed to Priest, Graham.

The greatest truths are often the hardest to express. - Priest, Graham

"The greatest truths are often the hardest to express."

Priest, Graham Truth

Philosopher-Logician Australian Born 1948 (age 78)

"Contradiction is not inconsistency."

"A contradiction at the level of thought does not mean reality is contradictory."

"Logic is the study of the laws of thought."

"Paraconsistency allows for true contradictions."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."