Apple CEO Tim Cook encourages new graduates through his message on Sunday for this year's graduating class at George Washington University. He said they must understand that this is their world and they have the responsibility to change it.

He also shared during his 20-minute speech personal stories about meeting Govs. George Wallace and Jimmy Carter as a teenager growing up in Alabama. He also talked about his first interaction in the late 1990s with Apple co-founder Steve Jobs and reading history books that didn’t discuss slavery's role in the Civil Ward.

Cook said to the grads, “The world needs you in the arena. There are problems that need to be solved, injustices that need to be ended, people that are still being persecuted, diseases still in need of cure”.

He said their contribution has a significant importance as the world needs their energy, passion, impatience etc. He encouraged them to take risks without any fear.

Cook said Jobs told him that doing something for benefits of others should be the motive of Apple to change the world. Cook also highlighted how dedicated Apple is towards the improvement of environment, education and workplace equality.

After finishing the speech, Cook took a picture of the graduates with his iPhone.