Hillary Clinton will celebrate her 68th birthday Monday. REUTERS

Monday marks presidential hopeful Hillary Clinton's 68th birthday, but she already kicked off the celebrations over the weekend.

It's been a big year for Clinton and she's celebrating in a big way. Singer Katy Perry helped celebrate the Democratic candidate's birthday with a performance Saturday at Clinton's Iowa rally. Perry's set list included Clinton favorites such as "Firework" and "Roar."

"Thank you @katyperry for being in Iowa with @HillaryClinton! Love your early bday gift!" tweeted Clinton campaign vice chairwoman Huma Abedin tweeted.

Clinton then made her way to New York Sunday for the perfect type of party for someone running for president: a campaign fundraiser.

Here we've compiled quotes from her more than 20 years in the public eye to celebrate the former Secretary of State's birthday:

1. "Dignity does not come from avenging insults, especially from violence that can never be justified. It comes from taking responsibility and advancing our common humanity."

2. "You know, everybody has setbacks in their life, and everybody falls short of whatever goals they might set for themselves. That's part of living and coming to terms with who you are as a person."

3. "It is past time for women to take their rightful place, side by side with men, in the rooms where the fates of peoples, where their children's and grandchildren's fates, are decided."

Hillary Clinton campaigns with her husband Bill Clinton for the 1992 presidential race. REUTERS

4. "I think that if you live long enough, you realize that so much of what happens in life is out of your control, but how you respond to it is in your control. That's what I try to remember."

5. "If I want to knock a story off the front page, I just change my hairstyle."

6. "Forgiveness is a way of opening up the doors again and moving forward, whether it's a personal life or a national life."

7. "Women are the largest untapped reservoir of talent in the world."

8. "You show people what you're willing to fight for when you fight your friends."

9. "If you believe you can make a difference, not just in politics, in public service, in advocacy around all these important issues, then you have to be prepared to accept that you are not going to get 100 percent approval."

10. "It is often when night looks darkest, it is often before the fever breaks that one senses the gathering momentum for change, when one feels that resurrection of hope in the midst of despair and apathy."