And the second gem from Adi Sankara is Para Puja. It offers some idea how mundane is our effort in pleasing God. Here is what it is:
Akhande sachidanande nirvikalpaika roopini,
Sthithe adwitheeya bhave asmin kadham pooja vidheeyathe
How do I worship that entity,
Which is limitless and without borders,
Which is full of perennial bliss,
Which has a form that is beyond imagination,
And which stands alone without a second?