No, no. Marriage is the monkey wrench women throw into the machinery of love. Now, without it, there'd be no past to bother you, no future to worry about, nothing but the present.

— (James Stewart)

11 seconds sound clip from the The Moon's Our Home (1941) classic radio play.

You can hear this line at 00:28:19 in the radio play.

Quote context

[...]

- You sound like a heathen.

- Oh, no, nothing like that. It's just that I don't burden myself with a lot of illusions as to right and wrong.

- I don't believe in marriage.

- Well, what's the matter with marriage? Well, everything. In the first place, it's unimportant.

- Well! Your father and mother didn't think so. Or did they?

- Uh, er... Well, uh, uh... No, it's old-fashioned, outdated.

- It would only take one woman to make you change your mind.

- No, no. Marriage is the monkey wrench women throw into the machinery of love. Now, without it, there'd be no past to bother you, no future to worry about, nothing but the present.

- Interesting, but strangely familiar. I must have read it somewhere.

- Oh. Read it where?

- I don't remember.

- Say! Say, aren't we going too fast?

- Yes, as a matter of fact, we are. Hey! Hey, easy, Nellie! Hey, whoa, Nellie!

- Well, pull on the reins.

- Well, what do you think I'm doing?

- I'm pulling on the... Whoa! Whoa, Nellie!

- Now, you see? Feminine instinct all over... willful, headstrong!

[...]