Some great quotes about tithing. I particularly love the one by Brigham Young.
Elder Howard W. Hunter:
"The law is simply stated as 'one-tenth of all their interest.' Interest means profit, compensation, increase. It is the wage of one employed, the profit from the operation of a business, the increase of one who grows or produces, or the income to a person from any other source" (in Conference Report, Apr. 1964, 35.)
President Gordon B. Hinckley said:
"The fact is that tithing is the Lord's law of finance. It came of revelation from him. It is a divine law with a great and beautiful promise. It is applicable to every member of the Church who has income. It is applicable to the widow in her poverty as well as to the wealthy man in his riches" ("the Widow's Mite," in Brigham Young University 1985-1986 Devotional and Fireside speeches , 9).
President Brigham Young taught:
"We are not our own, we are bought with a price, we are the Lord's; our time, our talents, our gold and silver, our wheat and fine flour, our wine and our oil, our cattle, and all there is on this earth that we have in our possession is the Lord's, and he requires one-tenth of this for the building up of his Kingdom" (Discourses of Brigham Young, 176).