Why does Pierre-Joseph Proudhon drink only herbal tea? (idea)

Why does Karl Marx drink only herbal tea?	Pierre-Joseph Proudhon	Cheese triangle objectivism	Property is theft
pedantic	You become the people you hate	ABC of Anarchism Chapter 1	How to cut and paste in Mac OS
Celestial Seasonings	Intellectual property is theft	Guinness	How I came to love tea
Allow yourself no dreams	Peter Kropotkin	Pierre-Paul Prud'hon	What I do with my philosophy degree
A Lovely Tea	Herbal Tea	bunraku	Bloomsday
Paris Commune	mutualism	World's most flexible programming language	Karl Marx

Because all proper tea is theft.