In a spiral galaxy, the ratio of dark-to-light matter is about a factor of ten. That's probably a good number for the ratio of our ignorance to knowledge. We're out of kindergarten, but only in about third grade.

Every mind was made for growth, for knowledge, and its nature is sinned against when it is doomed to ignorance.

Is there anything science should not try to explain? Science is knowledge and knowledge is power - power to do good or evil. Sometimes ignorance is bliss.

Our knowledge is a receding mirage in an expanding desert of ignorance.

There are in fact two things, science and opinion; the former begets knowledge, the latter ignorance.

His ignorance was as remarkable as his knowledge.

To try to write a grand cosmical drama leads necessarily to myth. To try to let knowledge substitute ignorance in increasingly larger regions of space and time is science.

The small part of ignorance that we arrange and classify we give the name of knowledge.

The knowledge from an enlightened person breaks on the hard rocks of ignorance.

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.

The doorstep to the temple of wisdom is a knowledge of our own ignorance.

Unsurprisingly, the poll-takers don't talk a lot in public about the ignorance of the electorate on political and public policy matters. And the politicians are not going to disclose the, let's say, limited body of knowledge in their constituencies. You don't get elected calling your voters airheads.

In expanding the field of knowledge we but increase the horizon of ignorance.

I've always thought that when they say ignorance is bliss, the converse to that is that knowledge is hell. The more you know, the bleaker things can get.

Knowledge is not a guarantee of good political behavior, but ignorance is a virtual guarantee of bad behavior.

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.

The recipe for perpetual ignorance is: Be satisfied with your opinions and content with your knowledge.

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.

Ignorance is bold and knowledge reserved.

The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge.

Suppose that we are wise enough to learn and know - and yet not wise enough to control our learning and knowledge, so that we use it to destroy ourselves? Even if that is so, knowledge remains better than ignorance.

Knowledge will forever govern ignorance; and a people who mean to be their own governors must arm themselves with the power which knowledge gives.

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 greater our knowledge increases the more our ignorance unfolds.