The Enchiridion by St. Augustine
Chapter 114.--Having Dealt with Faith, We Now Come to Speak of Hope. Everything that Pertains to Hope is Embraced in the Lord's Prayer.
Out of this confession of faith, which is briefly comprehended in the Creed, and which, carnally understood, is milk for babes, but, spiritually apprehended and studied, is meat for strong men, springs the good hope of believers; and this is accompanied by a holy love. But of these matters, all of which are true objects of faith, those only pertain to hope which are embraced in the Lord's Prayer. For, |Cursed is the man that trusteth in man| is the testimony of holy writ; and, consequently, this curse attaches also to the man who trusteth in himself. Therefore, except from God the Lord we ought to ask for nothing either that we hope to do well, or hope to obtain as a reward of our good works.