The right of man over the life and powers of the brutes rests on the fact that, because with the growing clearness of consciousness suffering increases in like measure; the pain which the brute suffers through death or work is not so great as man would suffer by merely denying himself the flesh, or the powers of the brutes.
 Arthur Schopenhauer, The World as Will and Representation (1819). copy citation

add
Author Arthur Schopenhauer
Source The World as Will and Representation
Topic clearness death
Date 1819
Language English
Reference
Note Translated by R. B. Haldane and J. Kemp
Weblink http://www.gutenberg.org/files/38427/38427-h/38427-h.html

Context

“in 300 years put 300,000 human beings to a painful death at the stake on theological grounds—a fact of which every zealot ought to be reminded whenever he begins to make himself heard. 80. The Church would say that these are merely opera operata, which do not avail unless grace gives the faith which leads to the new birth. But of this farther on. 81. The right of man over the life and powers of the brutes rests on the fact that, because with the growing clearness of consciousness suffering increases in like measure; the pain which the brute suffers through death or work is not so great as man would suffer by merely denying himself the flesh, or the powers of the brutes. Therefore man may carry the assertion of his existence to the extent of denying the existence of the brute, and the will to live as a whole endures less suffering in this way than if the opposite course were adopted.” source