The spiritual man puts the care of his soul before all else; and whoever diligently attends to his own affairs is ready to keep silence about others. You will never become interior and devout unless you refrain from criticism of others, and pay attention to yourself. If you are wholly intent on God and yourself, you will be little affected by anything outside this. Where are you when you fail to attend to yourself? And when you have occupied yourself in countless affairs, what have you gained, if you have neglected your soul? If you really desire true peace and union with God, attend to yourself, and set aside all else.
Thomas à Kempis