"All moral and spiritual things, all real truths of the soul, differ in the following way from the formulas of science and doctrines or philosophy; moral realities are more largely understood in physical form and concrete embodiment than in a general statement; and to know the infinite depth there is and the boundless reach of application, in goodness, love and faith, it is better to look on one saintly life or even a single act of noble living obedience, than into whole digests and bibles of definitions however comprehensive and precepts however divine." J. Martineau.

So the point is, just like this one picture, it says more about heroism and nobility than a hundred sermons.