Who said "Poetry is what remains when all else has been forgotten."?

This quote is attributed to Fernando Pessoa.

Poetry is what remains when all else has been forgotten. - Fernando Pessoa

"Poetry is what remains when all else has been forgotten."

Fernando Pessoa Literature

Poet Portuguese 1888–1935

"I am not I; I am this one walking beside me whom I do not see."

"To be great, be whole; exclude nothing, exaggerate nothing that is not you."

"The worst prison people live in is the fear of what other people think."

"I love without knowing how, or what, or even if I exist."

"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."