Use your head when you use your head.

Being wise rather than being smart are two worlds apart.

At court you must say less than you think and only speak as much of the truth as will do you good.

A word to the wise ain't necessary, it is the stupid ones who need all the advice

Yesterday I was clever, so I wanted to change the world. Today I am wise, so I am changing myself.

For cleverness and wisdom are as different as are the circuitous passages of a labyrinth and the straight, upward flight of a bird.