The Most Necessary Learning Is

The Most Useful Piece Of Learning For The Uses Of Life Is To Unlearn What Is Untrue.

Not To Unlearn What You Have Learned Is The Most Necessary Kind Of Learning.

As Iron Is Eaten Away By Rust, So The Envious Are Consumed By Their Own Passion.

Royalty Does Good And Is Badly Spoken Of.

Pay Attention To Your Enemies, For They Are The First To Discover Your Mistakes.