All the arguments to prove man's superiority cannot shatter this hard fact: in suffering the animals are our equals.

Philosophers
Peter Singer
Australian-born ethicist (1946- ), bioethics professor at Princeton. Animal Liberation (1975) launched the modern animal rights movement; his poverty work grounds the effective altruism movement.
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Source: Animal Liberation (Random House, 1975)Verified
Peter Singer's Other Quotes
If it is in our power to prevent something bad from happening, without thereby sacrificing anything of comparable moral importance, we ought, morally, to do it.
The notion that human life is sacred just because it is human life is medieval.
The capacity for suffering and enjoyment is a prerequisite for having interests at all.