is it true the mirror doesn't err?

On This Whitely Cloudy Day I Get So Sad It Almost Scares Me

(Pessoa wrote from many personas)

Just as words fail us when we try to express a thought,

So thoughts fail us when we try to express a reality,

For just as the essence of thought is not in speaking but in thinking,

So the essence of reality is not in thinking but in existing.

Thus everything that exists simply exists.

The rest is a kind of slumber we have,

A feebleness that's with us from the childhood of our sickness.

The mirror reflects correctly; it doesn't err because it doesn't think.

To think is essentially to err.

To err is essentially to be blind and deaf.

These truths are imperfect because they were spoken,

And before they were spoken, thought,

But the main and true point is they negate themselves

In the negation opposed to affirming anything. 

Being is the only valid affirmation,

And only what's affirmative doesn't need me.

1 October 1917.