every atom in your body came from a star that exploded. and, the atoms in your left hand probably came from a different star than your right hand. it really is the most poetic thing i know about physics: you are all stardust. Lawrence M. Krauss
Another is, if you take money out of your left pocket and put it in your right pocket, you're no richer. Merton Miller
You could put all the talent I had into your left eye and still not suffer from impaired vision. Veronica Lake
North Dakota State. What do you have to do there to graduate? Milk a cow with your left hand? Bobby Heenan
Let not your left hand see what your right hand does. Corsican Proverb
Let not your right hand know what your left hand doeth. Latin Proverb