May you find your happiness in everything you do. Wishing you the most blessed and happiest birthday ever.
You deserve it. 
akshay said it fine, happy birthday!
happy birthday to you & wish you many many happy returns for the day.
Thanks.
I am now officially older than dirt.
Many Many Happy Returns of the day !!
Wishing you luck, courage and all the strength needed to continue your successful presence in the game of life.
Happy Birthday Sir.