I'm carded for R-rated movies. And I get talked down to a lot. When I try to go rent a car or buy an airplane ticket or other stuff adults do I get 'Okaaaaaay honey.' I remember when I was 18 getting crayons in a restaurant.
I shall proceed from the simple to the complex. But in war more than in any other subject we must begin by looking at the nature of the whole for here more than elsewhere the part and the whole must always be thought of together.