Concepts which have proved useful for ordering things easily assume so great an authority over us, that we forget their terrestrial origin and accept them as unalterable facts. They then become labeled as 'conceptual necessities,' etc. The road of scientific progress is frequently blocked for long periods by such errors.
There is nothing grand or noble in having the use of a slave, in so far as he is a slave; or in issuing commands about necessary things. But it is an error to suppose that every sort of rule is despotic like that of a master over slaves, for there is as great a difference between the rule over freemen and the rule over slaves as there is between slavery by nature and freedom by nature . .
A well informed public opinion is essential to the growth of political and social awareness. Only he who is informed can comment intelligently on his nation's development and only by such comments can errors be corrected and progress stimulated
All corporatism - even when practised in societies where hard work, enterprise and cooperation are as highly valued as in Korea - encourages inflexibility, discourages individual accountability, and risks magnifying errors by concealing them.
Truths ... are too often considered as so true, that they lose all the power of truth, and lie bed-ridden in the dormitory of the soul, side by side with the most despised and exploded errors.
The near side of a galaxy is tens of thousands of light-years closer to us than the far side; thus we see the front as it was tens of thousands of years before the back. But typical events in galactic dynamics occupy tens of millions of years, so the error in thinking of an image of a galaxy as frozen in one moment of time is small.
For knowing is spoken of in three ways: it may be either universal knowledge or knowledge proper to the matter in hand or actualising such knowledge; consequently three kinds of error also are possible.
So may the outward shows be least themselves: The world is still deceived with ornament. In law, what plea so tainted and corrupt, But, being seasoned with a gracious voice, Obscures the show of evil? In religion, What damned error, but some sober brow Will bless it and approve it with a text, Hiding the grossness with fair ornament? There is no vice so simple but assumes Some mark of virtue on his outward parts.