Will Smith, red carpet philosopher?
30 May 2013 Last updated at 14:23 BST
There was plenty of parental advice at the New York premiere of Will and Jaden Smith's new movie.
The pair are playing father and son for a third time in the post-apocalyptic film After Earth.
Will produced the movie and called on M. Night Shyamalan to do directing duties.
The actor took time out of his red carpet dash however to philosophise on his on-set principles.