In battle it is not syllogisms that will keep the reluctant nerves and muscles at their post in the third hour of the bombardment. The crudest sentimentalism (such as Gaius and Titius would wince at) about a flag or a country or a regiment will be of more use. We were told it all long ago by Plato. As the king governs by his executive, so Reason in man must rule mere appetites by means of the 'spirited element'. The head rules the belly through the chest-- the seat as Alanus tells us, of Magnanimity, of emotions organized by trained habit into stable sentiments. The chest-- Magnanimity-- Sentiment-- these are the indespensible liasson officers between cerebral and visceral man. It may even be said that it is by this middle element that man is man: for by his intellect he is mere spirit and by his appetitie mere animal.
C. S. Lewis, The Abolition of Man
‘Stand And Never Yield’