We can reckon the cost of misdirected emotions by the price which the past has paid for them. We know the full significance of that irresponsible sympathy which... admits no difference between attack and resistance, between a war of aggression and a war of defence; which confuses moral issues, ignores experience, and insults the intelligence of mankind. The reformer whose heart is in the right place, but whose head is elsewhere, represents a waste of force; and we can not afford any waste in the conservation of honour and goodness.

in "The Cost of Modern Sentiment" (1916)