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

Source: Socrates as quoted in Diogenes Laertius’ Lives of Eminent Philosophers (3rd Century).

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

Source: Socrates as quoted in Diogenes Laertius’ Lives of Eminent Philosophers (3rd century CE). Variant: There is only one good, knowledge, and one evil, ignorance.

To know, is to know that you know nothing. That is the meaning of true knowledge.

Source: Republic, 354b-c (conclusion of book I) by Socrates.

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

Source: Socrates, Apology; 22d–e. Complete Sentence: I went to the artisans, for I was conscious that I knew nothing at all, as I may say, and I was sure that they knew many fine things of which I was ignorant, and in this they certainly were wiser than I was. But I observed that even Read More…

The secret of change is to focus all of your energy, not on fighting the old, but on building the new.

Note: This quote is misattributed to Socrates as this is actually a quotation from a character named Socrates in Way of the Peaceful Warrior: A Book that Changes Lives, by Dan Millman.

As for me, all I know is that I know nothing.

Source: This quote is from derived from Plato’s account of the Greek philosopher Socrates “Republic, 354b-c (conclusion of book I)”. Complete Sentence: As for me, all I know is that I know nothing, for when I don’t know what justice is, I’ll hardly know whether it is a kind of virtue or not, or whether Read More…

False words are not only evil in themselves, but they infect the soul with evil.

Source: This quote is from The words of Socrates, as quoted or portrayed in Plato’s works; Phaedo 115e. Variant: that to not speak well is not only sinful by itself, but lets evil intrude into the soul.