COLLEGE STATION, Texas -- In the final commencement address of his presidency, George W. Bush commiserated with graduates of Texas A&M University.

Bush was introduced to the 3,700 graduates at the College Station campus by his father, former President George H. W. Bush, who was walking with the aid of a cane.

"The president said keep it short, so with no further ado, the president of the United States, George Bush," he said.

To those graduates who aren't sure of what comes next, Bush said he knows how they feel.

He told the graduates to dedicate themselves to public service. And in what sounded like a defense of his own record, he urged them to adhere to personal principals.

"There'll be times people will tell you a different way is more accepted or popular. Remember that popularity is as fleeting as the Texas wind," the president said.

It was a friendly crowd. A&M University is the site of his father's presidential library, as well as the institution that produced his current Secretary of War. The president's approval rating was not an issue on this campus.

"You know he's doing his best and trying his best and doing what he thinks is right for the country and that goes a long way here," said Luke Brazell, an A&M graduate.

"It's a big deal. It's really amazing. I'm so happy he is here. I'm really honored," said Marissa Proske, an A&M graduate.

The president said he looked forward to returning to Texas when his term is up.

"I will depart ready to come home to people I have missed and the place I love, the state of Texas," he said.

Bush is wrapping up eight years as president, ceding the White House to President-elect Barack Obama on the afternoon of Jan. 20.

Also present was former first lady Barbara Bush, who was released from a Texas hospital 10 days after after undergoing surgery for a perforated ulcer.

In the latest Associated Press poll, 28 percent of Americans said they approve of the job the president is doing. Among Republicans, his approval rating is 54 percent.