"If you consider riches and their full enjoyment to be merely a short-lived illusory vanity, if you know that a virtuous life pleasing to God is better than riches, you will hold fast to this conviction and keep it in memory; then you will not sigh, complain or reproach anyone, but will thank God for everything, when you see that men worse than you are praised for eloquence or erudition and wealth. Insatiable desire of riches and pleasures, love of fame and vainglory, coupled with ignorance of truth, are the worst passions of the soul."
St. Anthony the Great, Philokalia.
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"And let us not grow weary while doing good, for in due season we shall reap if we do not lose heart." Galatians 6:9