Shakespeare's Inspiration?

Researchers examined fragments of 24 clay pipes that were recovered from the garden of Shakespeare's home in Stratford-upon-Avon, England, as well as from surrounding houses. After examining the fragments using a gas chromatography technique, the scientists found that eight of the pipes contained traces of cannabis, one contained nicotine, and two contained traces of cocaine derived from Peruvian coca leaves. Four of the pipes containing cannabis came from Shakespeare's property.