_If ye know these things, happy are ye if ye do them_.--JOHN xiii. 17.

_Therefore to him that knoweth to do good, and doeth it not, to him it is
sin_.--JAMES iv. 17.

We cannot kindle when we will
The fire that in the heart resides,
The spirit bloweth and is still,
In mystery our soul abides:
But tasks in hours of insight willed
Can be through hours of gloom fulfilled.

MATTHEW ARNOLD.

Hurt not your conscience with any known sin.

S. RUTHERFORD.

Deep-rooted customs, though wrong, are not easily altered; but it is the
duty of all to be firm in that which they certainly know is right for them.

JOHN WOOLMAN.

He often acts unjustly who does not do a certain thing; not only he who
does a certain thing.

MARCUS ANTONINUS.