Quotes from President Obama, Transportation Secretary Ray LaHood and U.S. Sen. Dick Durbin.
President Barack Obama:
"Since Teddy's diagnosis last year, we've seen the courage with which he battled his illness. And while these months have no doubt been difficult for him, they've also let him hear from people in every corner of our nation and from around the world just how much he meant to all of us. His fight has given us the opportunity we were denied when his brothers John and Robert were taken from us: the blessing of time to say thank you -- and goodbye.
"The outpouring of love, gratitude, and fond memories to which we've all borne witness is a testament to the way this singular figure in American history touched so many lives. His ideas and ideals are stamped on scores of laws and reflected in millions of lives -- in seniors who know new dignity, in families that know new opportunity, in children who know education's promise, and in all who can pursue their dream in an America that is more equal and more just -- including myself."
U.S. Transportation Secretary Ray LaHood, a former GOP congressman:
"I've always thought of him as one of the real bipartisan giants of the Congress and certainly of the Senate. He and I had a very cordial, warm relationship."
U.S. Sen. Dick Durbin:
"I would say that in more than 45 years, Ted Kennedy has had more impact on the actions and passions of our time than any other senator, maybe any other elected official. He has devoted his life to the Senate, public service. He has been an active participant in all of the major debates. There's hardly an issue or a law that's been passed that he hasn't had some imprint on.
"Beyond his public life, he was a great person, a great spirit. People talk about that great Kennedy humor -- his laugh that could draw a crowd, his smile that lit up a room and that great Kennedy heart that had been broken so many times. He'd be the first to put his arm around your shoulder when you were going through a tough time personally.
"We know that it's going to be a struggle to pass health care. We need help to do it, and we're going to have to do our best - hope we can use the spirit of Ted Kennedy to bring us across the finish line."
Compiled by Adriana Colindres.