An ignorant person is one who doesn't know what you have just found out. Will Rogers
A self-taught painter is one taught by a very ignorant person. John Constable
If an ignorant person is attracted by the things of the world, that is bad. But if a learned person is thus attracted, it is worse. Abu Bakr
An ignorant person is simply an enemy to himself. Styrian Proverb
No one is so poor as an ignorant person. Jewish Proverb
Explaining something to an ignorant person is harder than making a camel jump over a ditch. Turkish Proverb