Try never to be the smartest person in the room. And if you are, I suggest you invite smarter people … or find a different room. 

Michael S. Dell, chairman and chief executive officer of Dell, the computer company he founded in 1984 with $1,000 and built into a multibillion-dollar global corporation, delivered the commencement address for the 120th spring commencement at The University of Texas at Austin on May 17 2003

 I’m talking about never measuring your success based on the success of others – because you just might set the bar too low.

Michael Dell’s 2003 University of Texas Commencement Speech Transcript