Not I, but the city teaches.

I must first know myself, as the Delphian inscription says; to be curious about that which is not my concern, while I am still in ignorance of my own self, would be ridiculous. And therefore I bid farewell to all this; the common opinion is enough for me. For, as I was saying, I want to know not about this, but about myself: am I a monster more complicated and swollen with passion than the serpent Typho, or a creature of a gentler and simpler sort, to whom Nature has given a diviner and lowlier destiny?

Follow the argument wherever it leads.

My friend...care for your psyche...know thyself, for once we know ourselves, we may learn how to care for ourselves

But already it is time to depart, for me to die, for you to go on living; which of us takes the better course, is concealed from anyone except God.

The beginning of wisdom is a definition of terms.

The more I learn, the less I realize I know.