Authors:

Happiness is caused by things that happen around me, and circumstances will mar it; but joy flows right on through trouble; joy flows in the night as well as in the day; joy flows through persecution and opposition. It is an unceasing fountain bubbling up in the heart; a secret spring the world can't see and doesn't know anything about.

Dwight L Moody (2013). “Secret Power”, p.74, Lulu Press, Inc
Happiness is caused by things that happen around me, and circumstances will mar it; but joy flows right on through trouble; joy flows in the night as well as in the day; joy flows through persecution and opposition. It