This is the scene that sealed Sal's fate at Sterling Cooper. He turned down a client's advances.
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Sal had a client to please in the episode "Wee Small Hours." But it was far from easy. This was the beginning of the end for the character on Mad Men.
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Mad Men Season 3 Episode 9 Quotes

Give me more ideas to reject.

Don Draper

Now that I can finally understand you, I am less impressed with what you have to say.

Don Draper