I think real certitude is the product of assiduously striving to gain a deeper understanding of life, and a faith in God thereby. And as we begin to live and move in a different sphere, our certainty in the reality of that sphere — and the consequent nothingness of this ephemeral plane — begins to become so obvious that we really can’t see it any other way. In that sense, if another person were to assail us with questions and doubts, we would think, “But how could life possibly be less than beautiful, when the true reality of things touches me every day?” From that comes the true heart certainty: of having known faith directly, through concrete experience and development.