Princess Diana and Princes Harry, William and Charles
Princes William and Harry are pictured with Princess Diana and their father, Prince Charles, at a commemoration ceremony of VJ Day on August 19, 1995 in London. JOHNNY EGGITT/AFP/Getty Images

August will mark 20 years since the world was stunned by Princess Diana’s shocking death in a car accident in Paris, and though they have since grown from boys to young men, Princes William and Harry still have fond memories of their mother.

The royals, who are second and fifth in line for the throne, have often spoken out about their mother over the years, praising her humanitarian efforts and other things as well. Most recently, Prince Harry spoke about his mother while making a speech to promote a Landmine Free by 2025 campaign.

“She was an advocate for all those who felt she needed her voice most; whether it be marginalized men dying for AIDS in East London, ostracized sufferers of leprosy in India, or the teenage girl who had lost her leg to a landmine in Angola,” he said, according to Us Weekly. “She knew she had a big spotlight to shine, and she used it to bring attention on the people that others had forgotten, ignored, or were too afraid to support.”

The latest quote joins several others that the Princes have given about their mother over the years.

Here are the seven best of all time:

1. “...Behind the media glare, to us, just two loving children, she was quite simply the best mother in the world”--Prince Harry at a tribute for Princess Diana on the 10th anniversary of her death in 2007

2. “Initially, there is a sense of profound shock and disbelief that this could ever happen to you. Real grief often does not hit home until much later. For many it is a grief never entirely lost. Life is altered as you know it, and not a day goes past without you thinking about the one you have lost. I know that over time it is possible to learn to live with what has happened and, with the passing of years, to retain or rediscover cherished memories”--Prince William to The Daily Mail, January 2014

3. “What my mother recognized back then—and what I understand now—is that grief is the most painful experience that any child or parent can endure. As a father to two young children myself, I now appreciate it all the more”--Prince William at the Child Bereavement U.K. gala, October 2015

4. “Eleven years ago I made my first visit to Lesotho. I was also struck by the many children I met whose lives had been shattered by the loss of a parent and in some cases, both. Although our situations couldn't have been more different, I felt an overwhelming connection to many of the children I met. Nonetheless we shared a similar feeling of loss, having a loved one, in my case a parent, snatched away so suddenly. I, like them, knew there would always be a gaping hole that could never be filled”--Prince Harry, at Africa's Mamohato Children's Centre, November 2015

5. “I hope she’s looking down, with tears in her eyes, being incredibly proud of what we’ve established. I'm sure she’s longing for me to have kids so she can be a grandmother again” --Prince Harry on “Good Morning America,” March 2016

6. “We will do everything we can to make sure that she’s never forgotten and carry on all the special gifts, as such, that she had and that she portrayed while she was alive. I hope that a lot of my mother’s talents are shown in a lot of the work that I do”--Prince Harry on “Good Morning America,” March 2016

7. “Time makes it easier... I still miss my mother every day—and it’s 20 years after she died”--Prince William, at Keech Hospice Care in Luton, August 2016

Prince Harry, Catherine, Duchess of Cambridge and William, Duke of Cambridge
Princes William and Harry have often said wonderful things about their mother Princess Diana. Here, they are pictured with Will's wife, Kate, Duchess of Cambridge at a Marathon Training Day event on Feb. 5, 2017 in London. Alastair Grant - WPA Pool/Getty Images