Mandela Foundation to release book with 2,000 of his quotes

A new book containing 2,000 quotes from Nelson Mandela will go on sale ahead of his 93rd birthday in July, his foundation said Thursday.

"Nelson Mandela by Himself: The Authorised Book of Quotations" pulls from public speeches as well as private papers, correspondence and audio recordings made over 60 years, the Mandela Foundation said in a statement.

The quotes are grouped into 300 categories ranging from political topics like "Democracy" and "Racism" to personal musings on values such as "Optimism" and "Courage".

South Africa's first black president turns 93 on July 18, amid lingering concerns about his health following his brief hospitalisation in January for an acute respiratory infection.