[Tantric practice] is very strong preparation for death. When we die, we die alone, and when we are born, we are born alone. This is a very strong preparation for quick enlightenment.

Please think, or you should know, that in tantra, attachment is utilized on the path in order to quickly achieve enlightenment; that means to achieve full enlightenment in this life.

There are four classes of tantra: Kriya Tantra, Charya Tantra, Yoga Tantra and Maha-anuttara Yoga Tantra. These were taught by the Buddha in the aspect of Vajradhara. The last one, Maha-anuttara Yoga Tantra, is to achieve full enlightenment in the unified state of Vajradhara in one very brief lifetime of degenerated times. So that is how to quickly achieve full enlightenment.

If [tantric practice] is done with the self-cherishing thought, then it never becomes the cause of full enlightenment; it becomes the worst enemy to achieving full enlightenment. If it is done with desire for samsaric pleasure, then it is the cause of samsara and it becomes the ordinary cause of samsara. If it is done with attachment to this life and to this life’s pleasure, then it becomes negative karma and the cause of the lower realm sufferings.

All these tantra practices have to be one with bodhicitta realization, and only then do they become the cause of full enlightenment. Also, tantra practices should be done with right view, then all these practices directly cease the gross and subtle obscurations, and they become the remedy of samsara and the cause of samsara—delusions and karma. These practices should be done with renunciation, to be free from samsara. Holy Dharma is the cause of happiness.

So people who like doing those tantric practices very much first need to have lamrim realizations. It is so important to practice lamrim.