Evil and faults are corrected by good, by love, kindness, meekness, humility, and patience. John of Kronstadt
He who is insolent towards men is insolent towards God... Respect in man the grand, inestimable image of God and be forbearing towards the faults and errors of fallen man, so that God may be forbearing towards your own. John of Kronstadt
God in His goodness has arranged things perfectly, so that with our gifts, we can help each other, and with our faults, we can be humbled by each other. For every person has some gifts; but everyone also has some faults which one must struggle to overcome. Paisios of Mount Athos
He who has no faults is not born. Welsh Proverb
Love is blind to blemishes and faults. Irish Proverb
The person who only accepts friends without faults will never have any real friends. Jewish Proverb