I suppose the best mainstay a man can have as he gets along in years is a daughter. The right kind of daughter.

8 seconds sound clip from the The Philadelphia Story movie soundboard.

You can hear this line at 00:54:06 in the Blu-ray version of the movie.

Quote context

[...]

- Anyway, it's not your affair, Tracy. If it concerns anyone...

- Well, actually, I don't know whom it concerns except your father.

- That's very wise of you, Margaret.

- What most wives fail to realize is that their husbands' philandering has nothing whatever to do with them.

- Oh? Then what has it to do with?

- A reluctance to grow old, I think.

- I suppose the best mainstay a man can have as he gets along in years is a daughter. The right kind of daughter.

- How sweet. (2)

- Oh, no, no. I'm talking seriously about something I've thought over thoroughly. I've had to.

- I think a devoted young girl gives a man the illusion that youth is still his.

- Very important, I suppose.

- Oh, very, very. Because without her he might be inclined to go out in search of his youth.

- That's just as important to him as it is to any woman.

[...]