If you meet with JPMorgan Chase CEO Jamie Dimon , expect that he’ll have gone through all the pre-reading and will devote 100% of his attention to the topic at hand. But whatever you do, don’t look at your device in front of him.

“None of this nodding off,” said Dimon, who spoke with Fortune Editor-in-Chief Alyson Shontell in Washington, D.C. for a wide-ranging one-on-one interview at the annual Most Powerful Women summit.

“If you have an iPad in front of me and it looks like you’re reading your email and your notifications, I’ll tell you to close the damn thing,” said Dimon. “It’s disrespectful.”

And if Dimon finds he can’t give 100% of attention in meetings the way he used to?

“I should move on,” he said. “You can’t retire in place.”

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