The least I can do is speak out for the hundreds of chimpanzees who, right now, sit hunched, miserable and without hope, staring out with dead eyes from their metal prisons. They cannot speak for themselves.

Reported in Janelle Rohr, Animal rights: opposing viewpoints (1989), p. 100; Jane Goodall and Jennifer Lindsey, Jane Goodall: 40 Years at Gombe (1999), p. 6. Occasionally misreported in truncated form, as "The least I can do is speak out for those who cannot speak for themselves", in, e.g., quote honored on XOEarth eco money