Ignorance is sin, this is an eternal saying left by the ancient Greek philosopher Socrates.

Two flowers bloom, one on each side.

As the name suggests, ignorance means not knowing, not understanding, and not being clear. Its specific manifestations are: not distinguishing between true and false, good and evil, right and wrong; knowing but not knowing; taking things for granted behind closed doors and taking fallacies as truth; being gullible and blindly following, being extremely interested in hearsay and strange rumors that do not make sense; picking up people's wisdom and spreading lies, and easily accepting deception Propaganda to fool the people.

In a broad sense, harming others and yourself (including tangible and intangible harm) is sin. In a narrow sense, sin is causing tangible damage to the interests of others.

Ignorance is not very harmful if it does not affect others. In this sense, the biggest sin of ignorance is harming others. Ignorant people often promote falsehoods as truth and suppress and resist the truth intentionally or unintentionally. An even more ignorant person is a blind man riding a blind horse, a person who easily accepts ignorant propaganda from ignorant people, and is complacent and happy with it.

(The person pointing to the sky in the picture is the philosopher Socrates who would rather be a painful person than a happy pig)