Christians, be ye more serious in your movements;
Be ye not like a feather at each wind,
And think not every water washes you.
Ye have the Old and the New Testament,
And the Pastor of the Church who guideth you
Let this suffice you unto your salvation.
If evil appetite cry aught else to you,
Be ye as men, and not as silly sheep,
So that the Jew among you may not mock you.
Dante Alighieri, The Divine Comedy, Paradiso, Canto V, 73-81 (Translated by Henry Wadsworth Longfellow).