Apple CEO Tim Cook's best advice for college graduates in 2019

Being prepared isn't the same as being ready, another key piece of advice Cook shared with Stanford's 2019 graduates. Cook learned this lesson himself after Apple co-founder and former chief executive Steve Jobs died in 2011.

"And when he was gone, truly gone, I learned the real visceral difference between preparation and readiness," he said.

"When the dust settled, all I knew was that I was going to have to be the best version of myself that I could be."

Cook reiterated the famous advice his predecessor gave when addressing Stanford graduates in 2005. "Your time is limited, don't waste it living someone else's life," Jobs said 14 years ago.

"Don't try to emulate the people who came before you to the exclusion of everything else, contorting into a shape that doesn't fit," Cook said last Sunday to Stanford's class of 2019. "It takes too much mental effort, effort that should be dedicated to creating and building. You'll waste precious time trying to re-wire your every thought. And in the meantime, you won't be fooling anybody."

A central theme of Cook's Stanford commencement speech was the importance of accepting responsibility.

Cook didn't mention any specific tech companies by name. But his remarks about data breaches, privacy violations, fake news, hate speech, and "false miracles in exchange for a single drop of your blood" seem to reference companies such as Facebook, Google's YouTube, and Theranos.

"Graduates, at the very least, learn from these mistakes," he said. "If you want to take credit, first learn to take responsibility."

You've probably heard this expression countless times. But in another speech Cook gave to graduates — at Tulane University on May 18 — he said his tenure at Apple taught him that this maxim isn't true at all.

"At Apple, I learned that's a total crock," he said. "You'll work harder than you ever thought possible. But the tools will feel light in your hands."

"Whatever you do, don't make the mistake of being too cautious," Cook said to Tulane University's 2019 graduates. "Don't assume that by staying put, the ground won't move beneath your feet. The status quo simply won't last. So get to work on building something better."

When addressing Tulane's graduates, Cook urged graduates to open their eyes, look at things in a new way, and to have the courage to listen.

In what may have been another reference to Facebook, which has been criticized in the past for the "filter bubble" it creates, Cook encouraged graduates to "push back" against algorithms that "pull toward you the things you already know, believe, or like."

"It shouldn't be this way, but in 2019 opening your eyes and seeing things in a new way can be a revolutionary act," he said. "Summon the courage not just to hear but to listen. Not just to act but to act together."

Tackling big problems is never easy, but Cook urged Tulane's graduates to embrace the challenge.

"From climate change to immigration, from criminal justice reform to economic opportunity, be motivated by your duty to build a better world," Cook said. "Young people have changed the course of history time and time again. And now it's time to change it once more."

"Call upon your grit," Cook told Tulane's graduates. "Try something. You may succeed. You may fail. But make it your life's work to remake the world."