Ours is the first era in which it has been possible for people of different nations to conduct their affairs in a friendly and understanding manner. In the old days, peoples spent their lives fearing and even hating one another because of ignorance on all sides.
ignorancequotes
The only good is knowledge and the only evil is ignorance.
There is only one good, knowledge, and one evil, ignorance.
I know nothing except the fact of my ignorance.
Opinion is the medium between knowledge and ignorance.
No one knows whether death may not be the greatest of all blessings for a man, yet men fear it as if they knew that it is the greatest of evils. And surely it is the most blameworthy ignorance to believe that one knows what one does not know.
Opinion is the medium between knowledge and ignorance.
Again, those also who are ignorant of legal regulations which they are bound to know, and which are not hard to know, they chastise; and similarly in all other cases where neglect is thought to be the cause of the ignorance, under the notion that it was in their power to prevent their ignorance, because they might have paid attention.
attention / Ignorance / neglect / regulations
Condemnation before investigation is the highest form of ignorance.
Science tells us what we can know, but what we can know is little, and if we forget how much we cannot know we become insensitive to many things of very great importance. Theology, on the other hand, induces a dogmatic belief that we have knowledge where in fact we have ignorance.