St. Teresa compares the soul to the silkworm. The soul begins to live by the help God gives it through the remedies of the Church: Confession, reading good books, hearing sermons, etc. These things help a person mature to the point in which he can spin the cocoon – which is Christ! Fr. Reid also explains what St. Teresa means when she describes a soul in The 5th Mansions as a sleeping soul.
Episode ten focuses on The 5th Mansions, Chapters 1 & 2.