Merton: "no man can serve two masters"

This meditation on love is from the Thomas Merton book No Man Is An Island:

It would be a sin to place any limit upon our hope in God. We must love Him without measure. All sin is rooted in the failure of love. All sin is a withdrawal of love from God, in order to love something else. Sin sets boundaries to our hope, and locks our love in prsion. If we place our last end in something limited, we have withdrawn our hearts entirely from the service of the living God. If we continue to love Him as our end, but place our hope in something else together with Him, our love and our hope are not what they should be, for no man can serve two masters.

Merton, Thomas. No Man Is An Island. San Diego: Harcourt, 1955.