You can do nothing more salutary, sweeter, more joyful, more worthy, higher, happier, more perfect, or more blessed, than to love and praise God ardently. This I say one hundred times; this I repeat one thousand times-there is no study more sublime, no work more eminent, than to love and praise God, your Creator and Redeemer, with your whole heart, with your whole soul, with your whole mind, and with your entire strength. Do this so long as you live, feel, and understand; accomplish this by word and work, by night and day, at morning, noon, and evening, at every hour and at every moment.
Thomas a Kempis, Vera Sapientia or True Wisdom