This book goes a long way to providing an insight into these questions. It gives us glimpses of life depicted as explicityly as it may without hurting the sentiments of more conservative societies. "This 'Naughtiness' of Nepalese art may send blushes to the furthest periphery of your senses.
Erotic Art of the Kathmandu Valley', 116 pages, softback, colour photos, discusses the reasons for the erotic art on the temples, and is a cultural guide to this often misunderstood topic. Packed with interesting details about the historical, religious and cultural reasons for this art, as well as an introductory background to Hinduism and Buddhism in Nepal, this is not a book to read when you're half asleep in bed!