Anche Mago Merlino aveva un maestro :)

                                                                                                 

Left and right,                                                                     
Like day and night,
That's what makes the world go

round,
In and out,                                                                       
Thin and stout,                                                   
That's what makes the world go

 round,

For every up there is a down,
For every square there is a round,
For every high there is a low,
For every to there is a fro...
To and fro,
Stop and go,
That's what makes the world go round 

(La Spada nella roccia - W. Disney - 1963)

Up and down, forward and backward, left and right,
It's all the same.
All of this is done with the Yi,
Not externally.
......................
If there is a top, there is a bottom;
If there is a front, there is a back;
If there is a left, there is a right

  
(Trattato di Tai Chi Chuan - Chang San-Feng - 
XIII ° secolo)