"If it goes viral, you will be as popular as that cat playing with the paper bag," he said, earning laughs.

Hanks' speech was not short on jokes, but the main themes he returned to were serious — the difficulties, duties and responsibilities that the students would face following graduation.

"The future now rests with you, in your goofy hats, all because you went to Yale," said Hanks. "You are the anointed."

He warned students about technology's distractions and the distinctly dark implications of the fact that everyone could, and many did, record anything and post it online.

"There is a Big Brother," said Hanks. "He is all of us and he lives in our search engines."

The graduates, said Hanks, must not live in fear, but rather in faith, helping others — especially the returning veterans of wars in Iraq and Afghanistan — to cultivate the faith to carry on.

"Your job is to stand on the fulcrum between fear and faith. Fear at your back and faith in front of you … move always forward and … tweet out a picture of the results," said Hanks.

Student speeches and prizes followed, with Yalies speaking about the joys of attending the school and the sadness of leaving it.

Senior Riley Scripps Ford talked about how the school had taught students to fall in love with ideas, disciplines and places around a campus that had become their home.

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