John S. C. Abbott,
History of Frederick the Second…
“ Frederick dictated the following reply:“I am obliged to tell you that I have long forbid counts to be received, as such, into my army; for when they have served one or two years they retire, and merely make their short military career a subject of vain boasting. If your son wishes to serve, the title of count can be of no use to him. But he will be promoted if he learn his profession well.”The king then took the pen himself, and added with his own hand:“Young counts who have learned nothing are the most ignorant people in all countries. ”
