" Grub and Derek sitting on the veranda of the house in Dar es Salaam. Derek was a nationalized Tanzanian. He knew Swahili as well as he knew English. And he was liked and respected by almost all Tanzanians, including the Kigoma officials and my own field staff. He helped me to build up a new research center, where almost all the observations were made by the Tanzanian field staff. The "

― Jane Goodall , My Life with the Chimpanzees