An ignorant person is one who doesn't know what you have just found out.

An ignorant person is one who is tossed about between elation and despair by external forces and events.

ignoramus et ignorabimus — we are ignorant and will remain so.

The most deluded people are those who choose to ignore what they already know.

There have always been ignorant people, but they haven't always had college degrees to make them unaware of their ignorance. Some people imagine that they are well informed because they have memorized a whole galaxy of trendy dogmas and fashionable attitudes.

The modern ignorance is in people's assumption that they can outsmart their own nature. It is in the arrogance that will believe nothing that cannot be proved, and respect nothing it cannot understand, and value nothing it cannot sell . . . The <i>next</i> hard time is just as real to him as the last, and so is the next blessing. The new ignorance is the same as the old, only less aware that ignorance is the same as the old, only less aware that ignorance is what it is. It is less humble, more foolish and frivolous, more dangerous. A man, Old Jack thinks, has no choice but to be ignorant, but he does not have to be a fool. He can know his place, and he can stay in it and be faithful.

The most ignorant are the most conceited.

Most fools think they are only ignorant.

We may say, for instance, that nearly two-thirds of them cannot read or write. This but partially expresses the fact. They are ignorant of the world about them, of modern economic organization, of the function of government, of individual worth and possibilities, — of nearly all those things which slavery in self-defence had to keep them from learning.

I wish I was ignorant, so I didn't know how ignorant I am

I think the problem with people like this is that they are so stupid that they have no idea how stupid they are.

they will be hearers of many things and will have learned nothing; they will appear to be omniscient and will generally know nothing;

The highest form of ignorance is when you reject something you don’t know anything about. — Wayne Dyer

People not only don't know what's happening to them, they don't even know that they don't know.