Superstar Shah Rukh Khan, whose son Aryan turned 16 Tuesday, wants his "little" boy to learn important lessons of life as he grows up.

"My little son has turned 16 today and I hope he learns fast that 'tomorrow always comes and today is never yesterday'," Shah Rukh tweeted Tuesday.

Aryan is Shah Rukh's eldest son with Gauri. Together, they have a daughter named Suhana and another son by surrogacy, named AbRam.