Because Christian morality ...

Because Christian morality leaves animals out of account, they are at once outlawed in philosophical morals; they are mere \'things,\' mere means to any ends whatsoever. They can therefore be used for vivisection, hunting, coursing, bullfights, and horse racing, and can be whipped to death as they struggle along with heavy carts of stone. Shame on such a morality that is worthy of pariahs, and that fails to recognize the eternal essence that exists in every living thing, and shines forth with inscrutable significance from all eyes that see the sun!
Because Christian morality leaves animals out of account, they are at once outlawed in philosophical morals; they are mere 'things,' mere means to any ends whatsoever. They can therefore be used for vivisection, hunting, coursing, bullfights, and horse racing, and can be whipped to death as they struggle along with heavy carts of stone. Shame on such a morality that is worthy of pariahs, and that fails to recognize the eternal essence that exists in every living thing, and shines forth with inscrutable significance from all eyes that see the sun!
 Arthur Schopenhauer

Quotes from the same author

Every man takes the limits of his own field of vision for the limits of the world.
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 Arthur Schopenhauer
In action a great heart is the chief qualification. In work, a great head.
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 Arthur Schopenhauer
If children were brought into the world by an act of pure reason alone, would the human race continue to exist? Would not a man rather have so much sympathy with the coming generation as to spare it the burden of existence, or at any rate not take it upon himself to impose that burden upon it in cold blood?
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 Arthur Schopenhauer
A man of business will often deceive you without the slightest scruple, but he will absolutely refuse to commit a theft.
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 Arthur Schopenhauer
The first forty years of life give us the text; the next thirty supply the commentary on it.
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 Arthur Schopenhauer