The question is asked in ignorance, by one who does not even know what can have led him to ask it.

An ignorant doctor is the aide-de-camp of death.

Bomanz could not get away from the bird, who, if he had been human, would have hung out in taverns masquerading as the world’s foremost authority, armed with an uninformed and ready opinion on every conceivable subject. His cheerful bigotry and who-cares ignorance drove the old man’s temper to its limit.

How many times can a man turn his head pretending he just doesn't see?

There is only one good, knowledge, and one evil, ignorance.

The joke is not on Modi. The joke is on the "educated" elite/middle class supporters of Modi who have made idiocy and ignorance fashionable.

Εἰ μὲν ἀμαθὴς εἶ, φρονίμως ποιεῖς, εἰ δὲ πεπαίδευσαι, ἀφρόνως.

He argued that when the truth is not known, we desire to know it, but once we do know it, there are not a few cases in which we repent our knowing and envy that earlier time when we lived blissfully ignorant.

The reason why all those we have mentioned hold false opinions and make impious or ignorant assertions about God appears to be nothing else but this, that scripture is not understood in its spiritual sense, but is interpreted according to the bare letter.

Unfortunately, people are not rebelling against Microsoft. They don’t know any better.

For what is a child? Ignorance. What is a child? Want of instruction. For where a child has knowledge, he is no worse than we are.

We live in a society where there is no law in making money in the promulgation of ignorance or, in some cases, stupidity. There are a lot of things you can say never happened. You can go as relatively quasi-harmless as saying no one went to the moon. But you also can say that the Holocaust never happened.