If you want love…

If you find that there is no love in you, but you want to have it, then do deeds of love, even though you do them without love in the beginning. The Lord will see you desire and striving and will put love in your heart.
— Saint Ambrose of Optina (1812-1891)

For the glory of God…

Do everything for the glory of God, and in no thing – either outwardly nor inwardly – intend anything other than this glory. It should be the measuring stick of every endeavor and place its seal on each one.
— Saint Theophan the Recluse (1815-1894)

Give an account of yourself…

No matter who you are, what kind of work you do, give an account of yourself as to how you have performed your work: as a Christian, or as a heathen (that is, motivated by self-love and worldly pleasure). A Christian must remember that every deed, even the smallest, has a moral principle. A Christian, who remembers the teaching of Jesus Christ, should perform every deed so that it will be of use toward the spreading of the grace of God and the Kingdom of Heaven among men.
— Saint Gabriel of Imereti (1825-1856)