Real Knowledge Is To Know The Extent Of Ones

"“Ignorance more frequently begets confidence than does knowledge: it is those who know little, not those who know much, who so positively assert that this or that problem will never be solved by science.”"

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

"When you know a thing, to hold that you know it; and when you do not know a thing, to allow that you do not know it - this is knowledge."

"Mistakes are, after all, the foundations of truth, and if a man does not know what a thing is, it is at least an increase in knowledge if he knows what it is not."

"The only good is knowledge and the only evil is ignorance."

"Any fool can know. The point is to understand."