Now, that's what my son's always saying.
5 seconds sound clip from the Chitty Chitty Bang Bang (1968) movie soundboard.
You can hear this line at 01:35:10 in the Blu-ray version of the movie.
Quote context
[...]
- They have terrible tortures. The thumbscrew and rack.
- They stretch you and stretch you!
- When I first came here, I was a midget.
- Floating car? Well, that's impossible!
- Now, that's what my son's always saying.
- We'll help you, won't we, lads?
- Nil desperandum. We'll succeed. You'll see.
- Courage, man, courage. Every bursted bubble has a glory.
- Each abysmal failure makes a point.
- Every glowing path that goes astray shows you how to find a better way.
[...]