I prostrate and go for refuge to the kind root Gurus who are inseparable in nature from glorious Vajradhara! Please bless my mind with purity!
Those who wish to see the nature
of the mandalas of Secret Mantra
should cherish the Four Complete Purities
because this is the indispensable key.
Today, during these times, as interest among Westerners in the Tantrayana of Tibetan Buddhism grows day by day, for the benefit of some of my new students, I shall write a brief explanation of the nature of Secret Mantra and its exclusive special feature called the Four Complete Purities, in simple language for the sake of easy understanding.