Quote by Saint Francis of Assisi

Lord, make me an instrument of Your peace!
Where there is hatred let me sow love;
Where there is injury, pardon;
Where there is doubt, faith;
Where there is despair, hope;
Where there is darkness, light;
Where there is sadness, joy.

Please suggest source details if you know: book, page, year, online article address (url), correction (different author...), etc.. Thanks.