Dwayne "The Rock" Johnson, the most charming musclebound behemoth to ever emerge from the human weapons factory known as the WWE, is also a loving husband and father. To prove his soft side, he posted an Instagram photo of himself with his baby daughter Jasmine on Saturday.

The Rock captioned the photo with a letter dedicated to the four-month-old:

I'm always asked - What inspires YOU?

My answer's easy and honest.. what inspires me the most is always waitin' for me to walk thru my front door when I come home.

Happy 4 month birthday Jasmine! One day you'll know just how happy, proud, lucky and blessed you, your sister and your mama make me. You'll also thank me one day for your toughness and your mama's everything else.