It is impossible to make people understand their ignorance, for it requires knowledge to perceive it; and, therefore, he that can perceive it hath it not. 607
Vanity of science. Knowledge of physical science will not console me for ignorance of morality in time of affliction, but knowledge of morality will always console me for ignorance of physical science. 600
Dogmatism and skepticism are both, in a sense, absolute philosophies; one is certain of knowing, the other of not knowing. What philosophy should dissipate is certainty, whether of knowledge or ignorance. 607
It is an infantile superstition of the human spirit that virginity would be thought a virtue and not the barrier that separates ignorance from knowledge. 535
Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science. 2.01K
The recipe for perpetual ignorance is: Be satisfied with your opinions and content with your knowledge. 2.35K
Knowledge will forever govern ignorance; and a people who mean to be their own governors must arm themselves with the power which knowledge gives. 593
I wash my hands of those who imagine chattering to be knowledge, silence to be ignorance, and affection to be art. 520