Indulging in unrestrained and immoderate laughter is a sign of intemperance, of a want of control over one's emotions, and of failure to repress the soul's frivolity by a stern use of reason.
Whatever requires an undue amount of thought or trouble or involves a large expenditure of effort and causes our whole life to revolve, as it were, around solicitude for the flesh must be avoided by Christians.
Do not measure your loss by itself; if you do, it will seem intolerable; but if you will take all human affairs into account you will find that some comfort is to be derived from them.
In truth, to know oneself seems to be the hardest of all things. Not only our eye, which observes external objects, does not use the sense of sight upon itself, but even our mind, which contemplates intently another's sin, is slow in the recognition of its own defects.