Socrates Quote

There is only one good, knowledge, and one evil, ignorance.

Variant: The only good is knowledge and the only evil is ignorance.

Diogenes Laertius' Lives of Eminent Philosophers

There is only one good, knowledge, and one evil, ignorance.

There is only one good, knowledge, and one evil, ignorance.

There is only one good, knowledge, and one evil, ignorance.

There is only one good, knowledge, and one evil, ignorance.