Some of it is still so true. Like this:
"You can rub a Britisher up the wrong way by telling him 'we came over and won the last one'[war]. Each nation did it's share. But Britain remembers that nearly a million of its best manhood died in the last war. America lost 60,000 in action."
"The British don't know how to make a good cup of coffee. You don't know how to make a good cup of tea. It's an even swap."
And some are very quaint, like this:
"...God Save the King is played at the conclusion of all public gatherings such as theatre performances. The British consider it bad form not to stand at attention, even if it means missing the last bus."
But my favorite is this:
"Don't be mislead by the British tendency to be soft-spoken and polite. If they need to be, they can be plenty tough. The English language didn't spread across oceans and over the mountains and jungles and swamps of the world because these people are panty-waists."
Now, I don't know what a "panty-waist" is, but I think that's an insult just begging for a revival!