Confucius quotes and modern parallels

Confucius quote: Confucius he say “to know what we know and know what we do not know is wisdom”.

Almost two and a half thousand years later Donald Rumsfeld said “there are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don’t know. But there are also unknown unknowns. There are things we don’t know we don’t know” Obviously Rumsfeld still has much to learn!