"Advertising is utterly unprofitable, and I could prove it to you in one week. End an ad with an offer to pay five dollars to anyone who writes you that he read the ad through. The scarcity of replies will amaze you."

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Of the eternal corporeal substance (which is not producible ex nihilo, nor reducible ad nihilum, but rarefiable, condensable, formable, arrangeable, and "fashionable") the composition is dissolved, the complexion is changed, the figure is modified, the being is altered, the fortune is varied, only the elements remaining what they are in substance, that same principle persevering which was always the one material principle, which is the true substance of things, eternal, ingenerable and incorruptible.

— Giordano Bruno