Harry: I Hope Princess Diana Would Be Proud Of Me

02.27.13 9:21 PM ET

MASERU, LESOTHO - FEBRUARY 27:  Prince Harry learns sign language from deaf children during at visit to the Kananelo Centre for the deaf, a project supported by his charity Sentebale on February 27, 2013 in Maseru, Lesotho. Sentebale is a charity founded by Prince Harry and Prince Seeiso of Lesotho. It helps the most vulnerable children in Lesotho get the support they need to lead healthy and productive lives. Sentebale works with local grassroots organisations to help these children, the victims of extreme poverty and Lesotho's HIV/AIDS epidemic. Cathy Ferrier was appointed as Sentebale's Chief Executive in March 2012 and is spearheading a fundraising initiative to build the Mamohato Centre which will provide psychosocial support for children and young people infected with HIV. Prince Harry is due to pay a visit to Lesotho this week to catch up on his charity's progress and meet key children who will be supported by the charity.  (Photo by Chris Jackson/Getty Images)

Chris Jackson / Getty Images

Prince Harry learns sign language from deaf children during at visit to the Kananelo Centre for the deaf

Prince Harry paid an emotional tribute to his mother tonight, saying the he hoped that Princess Diana would be looking down from above and be “proud” of the work his charity Sentebale has achieved.

Speaking at a gala dinner he evoked his mother's memory, saying that she might be in heaven drawing out plans for how a new playground the charity Sentebale - the name means 'forget me not' - is building.

Harry made the moving speech in Johannesburg, South Africa, where he flew today after spending several days in Lesotho.

The dinner marked the launch of plans to build a Mamohato Centre for children and young people - named after Sentebale's co-founder Prince Seeiso’s mother Queen Mamohato Bereng Seeiso.

Harry said: “I hope she would be proud of what we are trying to achieve in her name. I hope that my mother will be proud, too. Maybe, just maybe,  they are together somewhere up there, with blue prints and sketches already mapped out!

“I can only hope we put the swings in the right place.”

The 250-plate dinner dinner kicks off a £2.4 million fundraising campaign to build the first permanent centre for children and young people infected with, or affected by, HIV and Aids in Lesotho.

Harry said: 'Over the past few days I have been in Lesotho visiting Sentebale staff, care-givers, volunteers and, most importantly, meeting and getting to know the children who receive our support.

"It is inspiring to hear how Sentebale is making such a big difference to these children – so many of whom are orphaned, have disabilities, are HIV-positive or who live the harsh life of the herd-boy."