I prefer tongue-tied knowledge to ignorant loquacity.
Our ignorance of history causes us to slander our own times.
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.
The main scourge of humanity is not ignorance, because the ignorant often have excuses, but the refusal to know.
