A whole city can be spared on the account of one upright person, and that is a staggering weight to lay on the individual. Search every street and open square, the demand goes, and find a single man who does what is right and seeks the truth. The guilt of all of it will be forgiven. The many are carried by the one who stands straight. Everything hangs on finding him.
The two things asked of that man are inseparable. He does judgment, acting rightly in the world, and he seeks the truth, refusing the comfortable lie even when everyone around him has stopped looking. His existence would justify the whole place. Becoming such a person is not a private matter. One honest man who chases what is true holds up more than his own life, and the town may never know it owes him its survival.