Who said "In friendship, as in war, loyalty is paramount."?

This quote is attributed to Wilhelm II.

In friendship, as in war, loyalty is paramount. - Wilhelm II

"In friendship, as in war, loyalty is paramount."

Wilhelm II Friendship

Kaiser, Monarch German 1859–1941

"The fact that I am not always right is something of which I am well aware."

"We have fought this war like sissies and not like men."

"You will find that the the Americans only outwish us."

"I am the German Emperor, and I consider myself an instrument of the Lord."

"Friendship is built on trust and honesty."

"True friendship is worth more than gold."

"Good friends are like stars, always there even when you can't see them."

"Friendship means sacrifice."