Our love to God does not depend upon the emotions of the moment. If you fancy you do not love Him enough, above all when Satan tempts you to look inward, go immediately and minister to others; visit the sick, perform some act of self-sacrifice or thanksgiving. Never mind how dull you may feel while doing it; the fact of your feeling excited proves nothing; the fact of your doing it proves that your will, your spiritual part, is on God's side, however tired or careless the poor flesh may be. The "flesh" must be brought into harmony with the spirit, not only by physical but by intellectual mortification.

MS. Letter. 1843.