"Those who experiment on animals should never be able to quiet their own conscience by telling themselves that these cruelties have a worthy aim." - Albert Schweitzer
"If chimpanzees have consciousness, if they are capable of abstractions, do they not have what until now has been described as `human rights'? How smart does a chimp have to be before killing him constitutes murder?" - Carl Sagan
"I abhor vivisection. It should at least be curbed. Better it should be
abolished. I know of no achievement through vivisection, no scientific
discovery that could not have been obtained without such barbarism and cruelty. The whole thing is evil." - Dr. Charles Mayo, one of the
founders of the Mayo clinic.