Meno

In the dialogue they are trying to describe virtue without using virtue to describe it.

Socrates gives Meno advice on how to have a dialogue, which Meno doesn't follow.

"If the souls are truth.."  would this imply that we are never wrong?

Socrates says that we have eternal souls that know everything about the world. Each time a soul is reborn, it has to recollect all of his thoughts / past learnings.
So we rediscover everything.