Who said "To feel is to think without thinking."?

This quote is attributed to Fernando Pessoa.

To feel is to think without thinking. - Fernando Pessoa

"To feel is to think without thinking."

Fernando Pessoa

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."