John Taylor
"We should be honest and honorable in our dealings one with another. If we try to defraud our brother, how can we expect God to bless us in that, for [our brother] is a child of our Heavenly Father just as much as we are. ... [God] feels interested in his welfare, and if we try to take advantage to the injury of the Lord's child; do you think [the Lord] would be pleased with us?" (Teachings of Presidents of the Church: John Taylor, p.148).