Man is a fallen star till he is right with heaven: he is out of order with himself and all around him till he occupies his true place in relation to God. When he serves God, he has reached that point where he doth serve himself best, and enjoys himself most. It is man's honour, it is man's joy, it is man's heaven, to live unto God.

Serving humanity is fulfilling the description of Christ

Serving humanity is not beneath spiritual pursuit