How Happy Are Those Who Carry the Psalms in Their Heart!

Henri Nouwen, The Genesee Diary, p. 100:

Many times I have thought: If I am ever sent to prison, if I am ever subjected to hunger, pain, torture, or humiliation, I hope and pray that they let me keep the psalms. The psalms will keep my spirit alive, the psalms will allow me to comfort others, the psalms will prove the most powerful, yes, the most revolutionary weapon against the oppressor and torturer. How happy are those who no longer need books but carry the psalms in their heart wherever they are wherever they go. Maybe I should start learning the psalms by heart so that nobody can take them away from me.