Note: "Tata" is the Xhosa word for father, and "Madiba" is the Xhosa clan name by which Mandela was affectionately known.
"It is the end of 95 glorious years of a freedom fighter, a dedicated and humble servant of the people of South Africa.
"Whilst the long walk to freedom has ended in the physical sense, our own journey continues. We have to continue building the type of society you worked tirelessly to construct. We have to take the legacy forward.
"We shall not say goodbye for you are not gone. You will live forever in our hearts and minds."
"Madiba's life has been a record of all the trials and tribulations the entire continent had to endure in the hands of ruthless colonisers and inhuman masters.
"Madiba's life was the mirror of the continent, for the liberation of which he so relentlessly fought. Africa is forever indebted to him for that."
"Today, mingled with our grief is the enormous pride that one of our own has during his lifetime and now in death united the people of South Africa and the entire world on a scale never before experienced in history."
"'Tatamkhulo' ('our grandad' in Xhosa) was a lot of fun to be around ... he had a great sense of humour.
"He went to school barefeet and yet he rose to the highest office in the land."
JOYCE BANDA, PRESIDENT OF MALAWI AND CHAIRPERSON OF THE SOUTHERN AFRICAN DEVELOPMENT COMMUNITY (SADC)
"The struggle Tata Madiba led against the apartheid system was not just a struggle against racial inequality, but a struggle against all forms of oppression against humanity.
"A struggle for democracy and human dignity, it was a struggle for the emancipation of the youth, a struggle for the social security of children, it was a struggle for participation of women in commerce, in politics and in high office."
"This great son of the world, Madiba, showed us the way. Whether you are white, black, yellow or brown, you are all God's children. Come together, work together.
"As we go on without Madiba, he is no more in terms of this life but he is still Madiba our leader. He is the Madiba sent to us by God."
(Reporting by Olivia Kumwenda-Mtambo and Pascal Fletcher; Editing by Louise Ireland)