• Related coverage: University of Michigan students graduate and prepare 'to take the next step'
• Twitter CEO Dick Costolo tells University of Michigan graduates: 'Be bold'

About 5,000 University of Michigan students —scratch that, graduates— celebrated commencement during a ceremony at Michigan Stadium Saturday.

U-M President Mary Sue Coleman told graduates to take risks.

"You will make a difference with your advocacy, your inventions, your initiative, because these are the trademarks of leaders," she said. "You will create change for the better, you will work on behalf of your neighbors and you will do it with dignity and integrity."

Dick Costolo, CEO of Twitter, also urged students to be bold in their endeavors in his keynote address.

"Don't always worry about what your next line is going to be," he said.

Roughly 5,900 undergraduates and 4,400 graduate students are graduating from U-M this spring.