Dionysus (/daɪ.əˈnaɪsəs/; Greek: Διόνυσος Dionysos; Roman: Bacchus) is the god of ritual madness, wine, drugs, and fertility.
All of antiquity extolled Dionysus as the god who gave man wine. However, he was known also as the raving god whose presence makes man mad and incites him to savagery and even to lust for blood. He was the confidant and companion of the spirits of the dead…The flowers of spring bore witness to him, too. The ivy, the pine, the fig tree were dear to him. Yet far above all of these blessings in the natural world of vegetation stood the gift of the vine…Dionysus was the god of the most blessed ecstasy and the most enraptured love. But he was also the persecuted god, the suffering and dying god, and all whom he loved, all who attended him, had to share his tragic fate.
-Walter Otto, Dionysus: Myth and Cult