Above is the ground state wavefunction for a  two-dimensional simple harmonic oscillator.

  "The Mind is not a vessel to be Filled, 

   But a Fire to be Lighted." - Plutarch

  "The Heavens are calling you.

   And wheel around you 

   Displaying to you their

   Eternal Beauties.

   And still your eye is 

   Looking on the ground." - Dante

  "Happiness lies in the joy of achievement and the thrill of creative effort" - F.D.R.

  "We are the music makers, 

   and we are the dreamers of dreams."

                                      - Willy Wonka