Prince William, Duke of Cambridge
On the engagement ring he gave to Kate Middleton, which had been his mother's engagement ring.
First post-engagement interview (2010)
Prince William, Duke of Cambridge, is a member of the British royal family. He is the elder son of Charles, Prince of Wales, and Diana, Princess of Wales. Since birth, he has been second in the line of succession to the British throne.
William was educated at four schools in the United Kingdom and studied for a degree at the University of St Andrews. During a gap year, he spent time in Chile, Belize, and Africa. In December 2006, he completed 44 weeks of training as an officer cadet and was commissioned in the Blues and Royals regiment. In April 2008, William completed pilot training at Royal Air Force College Cranwell, then underwent helicopter flight training and became a full-time pilot with the RAF Search and Rescue Force in early 2009. His service with the British Armed Forces ended in September 2013. He then trained for a civil pilot's licence and spent over two years working as a pilot for the East Anglian Air Ambulance.
In 2011, Prince William was made Duke of Cambridge and married Catherine Middleton. The couple have three children: Prince George, Princess Charlotte, and Prince Louis. Wikipedia

Prince William, Duke of Cambridge
On the engagement ring he gave to Kate Middleton, which had been his mother's engagement ring.
First post-engagement interview (2010)
Prince William, Duke of Cambridge
Response to the question "What’s the coolest thing about being a prince?" in an interview with Matt Lauer of NBC News, as quoted in FishbowlNY (15 June 2007) http://www.mediabistro.com/fishbowlny/whats-the-coolest-thing-about-being-a-prince_b5228
Prince William, Duke of Cambridge
First post-engagement interview (2010)
Prince William, Duke of Cambridge
First post-engagement interview (2010)
Prince William, Duke of Cambridge
On the reaction of their flatmates when he and Kate became romantically involved with each other.
First post-engagement interview (2010)
Prince William, Duke of Cambridge
(Comment of thanks to the media for respecting his privacy during his enrollment at Eton College) AP via CBS News https://web.archive.org/web/20150906180820/https://www.cbsnews.com/news/prince-faces-press/ <br class="br">Associated Press interview during his gap year (29 September 2000)
“I was just talking with friends and they said it was good idea and I just sort of liked the idea.”
Prince William, Duke of Cambridge
AP via CBS News https://web.archive.org/web/20150906180820/https://www.cbsnews.com/news/prince-faces-press/ <br class="br">Associated Press interview during his gap year (29 September 2000)
Prince William, Duke of Cambridge
(Reaction to a book published about his mother from her private secretary) AP via BBC News http://webcache.googleusercontent.com/search?q=cache:EQW97-KJVhEJ:news.bbc.co.uk/2/hi/uk_news/948542.stm+&cd=4&hl=en&ct=clnk&gl=us&client=safari <br class="br">Associated Press interview during his gap year (29 September 2000)
Prince William, Duke of Cambridge
Associated Press interview during his gap year (29 September 2000)