Pride is the source…

There are very few people, even in the lowliest conditions, who do not have a good opinion of themselves. They regard themselves as far superior to their equals, and their detestable pride urges them to believe that they are indeed worth a great deal more than most other people. From this I conclude that pride is the source of all the vices and the cause of all the evils which have occurred, and which are still to come, in the course of the centuries. We carry our blindness so far that often we even glorify ourselves on account of things which really ought to cover us with confusion.
–Saint John Vianney (1786-1859)

When we are in sin…

When we are in sin, our soul is all diseased, all rotten; it is pitiful. The thought that the – good God sees it ought to make it enter into itself… Put yourself on good terms with God; have recourse to the Sacrament of Penance; you will sleep as quietly as an angel. You will be glad to waken in the night, to pray to God; you will have nothing but thanksgivings on your lips; you will rise towards Heaven with great facility, as an eagle soars through the air.
–Saint John Vianney (1786-1859)