Herbs were the earliest source of medicine. The use of herbs for healing dates as far back as pre historic times and has since been woven into the culture and civilization of people. In ancient times, herbs were closely allied to ritual belief, myth and magic. In Egypt, herb gardens were planted about 4,000 years ago. The use of volatile oils was common in bath. Incense has long been important in rituals in ancient Egypt, Rome, Greece, India and China. In terms of ancient record, Chinese herbalism is widely as the oldest in the world with a long unbroken history of record. Aryuvedic (Indian herbalism) medicine is also well recorded and dates back to 2,000 BC.