"Who else would agree to give up a minimum of two hours a week, not counting commuting time, to sit through blood extraction and reinfusion twice, all for a grand total of 50 bucks? The plasma industry that year (2009) made around $10 billion; the same liter of blood I produced for $20 or $30 was worth up to $200, even before it was treated to make medicine. My first graduate summer was thus the first time I understood the machinations of a capitalist economy, not because I read Marx, but because I experienced its exploitation of my own body, literally."

On the Absurdity of Ethical Capitalism