we can’t see what we aren’t looking for, and don’t notice what we don’t notice.

Normally, we do not so much look at things as overlook them.

The range of what we think and do is limited by what we fail to notice. And because we fail to notice that we fail to notice, there is little we can do to change; until we notice how failing to notice shapes our thoughts and deeds.

Here’s a curious fact about human beings: we have a really hard time realizing that something isn’t there.

Some things you miss because they’re so tiny you overlook them. But some things you don’t see because they’re so huge.

Just because we do not perceive something, it is not correct to say it does not exist.

Our insanity isn't that we see people who aren't there. It's that we ignore the ones who are.

It is hard indeed to notice anything for which the languages available to us have no description.

We don't appreciate what we have until it's gone. Freedom is like that. It's like air. When you have it, you don't notice it.

Often a sign of expertise is noticing what doesn't happen.

You see, but you do not observe.

To notice is to select, to
regard some bits of perception, or some features of the world, as more
noteworthy, more significant, than others. To these we attend, and the
rest we ignore — for which reason conscious attention is at the same time ignorance despite the fact that it gives us a vividly
clear picture of whatever we choose to notice.

The aspects of things that are most important for us are hidden because of their simplicity and familiarity. (One is unable to notice something because it is always before one’s eyes.) The real foundations of his enquiry do not strike a man at all

Most people don't notice what's going on around them. That's my principal message to writers: for God's sake, keep your eyes open.