 For Catherine, we grow in love as we grow in truth, and if we want to know who God is and know ourselves in God, we have to enter this cell of self-knowledge. So what does she mean by that? Catherine thinks that we're not going to really know ourselves by just thinking about ourselves or just by receiving from the world around us what others think of us. She believes that we have to go interiorly. This is why she emphasizes so much the need for silence and prayer, because she says we have to enter into this space within us, within our souls, where we can hear Christ revealing to us the truth of who he is and the truth of who we are.