Philippians 4:8-9
Finally, brethren,
whatever is true,
whatever is honorable,
whatever is right,
whatever is pure,
whatever is lovely,
whatever is of good repute,
if there is any excellence
and if anything worthy of praise,
dwell on these things.
which things you have
and learned
and received
and heard
and seen
in me,
practice these things,
and the God of peace will be with you.
The human mind will always set itself on something and Paul wished to be quite sure that the Philippians would set their minds on the right things.
(William Barclay)
Temples have their sacred images; and we see what influence they have always had over a great part of mankind; but in truth the ideas and images in men’s minds are the invisible powers that constantly govern them ; and to these they all pay universally a ready submission.
(John Locke, from Of the Conduct of Understanding; later quoted by Jonathan Edwards in Freedom of the Will).