As Chris Gardner talking to his son Christopher. From the movie The Pursuit of Happyness.

Hey. Don’t ever let somebody tell you you can’t do something. Not even me. Alright?

You’ve got a dream, you’ve gotta protect it. People can’t do something themselves, they wanna tell you you can’t do it.

You want something, go get it. Period.

Will Smith (born in 1968)
Actor, film producer and pop rapper