He who does not desire power is fit to hold it.
Do thine own work, and know thyself.
One of the penalties for refusing to participate in politics is that you end up being governed by your inferiors.
And is there anything more closely connected with wisdom than truth?
Knowledge of the soul is the only universal truth and the only wisdom - all other knowledge is transient.
The god, O men, seems to me to be really wise; and by his oracle to mean this, that the wisdom of this world is foolishness and of none effect.