Fernando Pessoa on Knowledge

"His livid face is a bewildered false green. I notice it, between the chest's hard air, with the fraternity of knowing I will also be so."

"Given that we cannot know all the elements in a problem, we never can solve it."

"We become sphynxes, though fake, up to the point we no longer know who we are."

"Knowing not to have illusions is absolutely necessary in order to have dreams."

"I know not what tomorrow will bring."

"There's no greater tragedy than an equal intensity, in the same soul or the same man, of the intellectual sentiment and the moral sentiment. For a man to be utterly and absolutely moral, he has to be a bit stupid. For a man to be absolutely intellectual, he has to be a bit immoral."

"There is no happiness without knowledge. But knowledge of happiness is unhappy; for knowing ourselves happy is knowing ourselves passing through happiness, and having to, immediatly at once, leave it behind. To know is to kill, in happiness as in everything. Not to know, though, is not to exist."

"There's a tiredness of abstract intelligence, and it's the most horrible of tirednesses. It doesn't weight on you like the tiredness of the body, nor does it worry you like the tiredness of knowledge and emotion. It's a weightiness of the conscience of the world, an inability of the soul to breathe."

"Every day things happen in the world that cannot be explained by any law of things we know. Every day they're mentioned and forgotten, and the same mystery that brought them takes them away, transforming their secret into oblivion. Such is the law by which things that can't be explained must be forgotten. The visible world goes on as usual in the broad daylight. Otherness watches us from the shadows."