"Note that the eating of flesh is not only physically against nature, but it also makes us spiritually coarse and gross by reason of satiety and surfeit."

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We are so vain as to set the highest value upon those things to which nature has assigned the lowest place. What can be more coarse and rude in the mind than the precious metals, or more slavish and dirty than the people that dig and work them? And yet they defile our minds more than our bodies, and make the possessor fouler than the artificer of them. Rich men, in fine, are only the greater slaves.

— Seneca the Younger