To master this game you have to be, like I said, very calm, but also quick of wit, sharp of eye, fast of mind, slow of tongue, quick to see.
14 seconds sound clip from the Mystery of Chess Boxing movie soundboard.
You can hear this line at 00:50:42 in the DVD version of the movie.
Quote context
[...]
- And playing chess will teach you to achieve calmness of mind. I've never discovered a better way.
- Ghost Faced Killer! Now I've finally caught up with you!
- All right, how's this? You're in check.
- Granddad, I think it's too much.
- How do you know what's too much?
[...]