We'd develop such a strength, we'd create such a tidal wave of goodwill that no human force could stand against it.

9 seconds sound clip from the Meet John Doe (1941) movie soundboard.

You can hear this line at 00:51:38 in the DVD version of the movie.

Quote context

[...]

- I know a lot of you are saying to yourselves: He's asking for a miracle to happen. He's expecting people to change all of a sudden.

- Well, you're wrong. It's no miracle. It's no miracle... because I see it happen once a year and so do you, at Christmas time.

- There's something swell about the spirit of Christmas. To see what it does to people, all kinds of people.

- Now why can't that spirit, that same warm Christmas spirit, last the whole year round?

- Gosh! If it ever did, if each and every John Doe made that spirit last 365 days out of a year...

- We'd develop such a strength, we'd create such a tidal wave of goodwill that no human force could stand against it.

- Yes sir, my friends, the meek can only inherit the earth when the John Does start loving their neighbors.

- You better start right now. Don't wait till the game is called on account of darkness.

- Wake up, John Doe, you're the hope of the world.

- John, you were wonderful.

[...]