3. Pessoa, via His Heteronym (Alter Ego), Alvaro de Campos, Answers the Question Asked in Part 1, Is Lisbon a Hallucination?
"Finally, the best way of travelling is to feel.
Feel everything in every way.
Feel everything excessively,
because everything is, in fact, excessive
and all reality is an excess, a violence,
an extraordinarily clear hallucination
that we all live in common with the fury of our souls;
the center that pulls the strange centrifugal forces
that are our human psyches in accordance with our senses."
"Lisbon Revisited (1923)" (translation by Moonraven)
So, there we have it from one of the horse's many mouths.