Lately I've been reading through a couple of books. Evagrius Ponticus' *The Praktikos & Chapters on Prayer* and a collection of Nazianzus' poetry *On God and Man*. A few gems from the first today...
60. If you are a theologian you truly pray. If you truly pray you are a theologian.
89. Do not set your heart on what seems good to you but rather what is pleasing to God when you pray. This will free you from disturbance and leave you occupied with thanksgiving in your prayer.
121. Happy is the man who thinks himself no better than dirt.