Yet among and above these things, there is one other that struck me most: "pure in heart and stout in conscience." Albert appears to be giving to us here the key ingredients, the most important aspects and ways of being that are necessary to living this life in allegiance and in service to the Master: "a pure heart and a stout conscience." A pure heart is one that is not defiled, nor tainted by any other love. There is a complete detachment from the love of the things of this world; no more desires or longings for that which diverts us from the Beloved. A pure heart has neither room nor place for the things of hatred, anger, lust, jealousy, or ill will toward any other. A pure heart is one that is filled with Love and God alone, the chamber at the center of the castle, or summit of the Mountain where one can rest fully in the bosom of the One who loves us.
The second aspect Albert mentions is the stout conscience, that is, a conscience that can remain strong and upright for the things that it already believes and knows. A stout conscience is not necessarily a good one, but it means that if we are Good (as good as any man can be in this life), if we first have a pure heart, we can then stand with that purity in the face of and for the sake of others. The stout conscience is the strength of our substance, the ability to withstand temptations, and maintain confidence in the lord. The one who has a stout conscience, through the Grace of God, is the one who transforms souls and is able to call forth and guide them to the Lord; and it is only with a pure heart that we can be assured of the One toward whom we are leading others to.