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I think we are blind. Blind people who can see, but do not see.

There is a condition worse than blindness, and that is, seeing something that isn't there.

You wouldn't know it, but I'm no good at recognising people; I have face blindness.

The learning and knowledge that we have, is, at the most, but little compared with that of which we are ignorant.

Since we cannot know all that there is to be known about anything, we ought to know a little about everything.

Two kinds of blindness are easily combined so that those who do not see really appear to see what is not.

Humans make errors. We make errors of fact and errors of judgment. We have blind spots in our field of vision and gaps in our stream of attention. Sometimes we can't even answer the simplest questions.

While some of us may know than others about certain things, it is the thinnest slice of all that is, or could be known. In that sense, we are all profoundly ignorant.

Blessed are the blind, for they know not enough to ask why.