Buddha mentioned the students to have inspections first because bad things will inevitably happen when getting the wrong guru
When Like Jigme practiced Guru Yoga, he visualized Longchenpa as the Buddha. There was no impure thought towards Guru. For the Dharma practitioners, specifically Vajrayana practitioners, the Guru is very important.
Thinking of Guru all the time of day and night will give us a great power to protect ourselves from Samsara
The idea to practice Guru Yoga is to receive the blessing from Guru, which means one becomes inseparable from Guru. One doesn't have to have too many thoughts but only faith, only mindfulness, only visualization of Guru.
The most important thing is to rely on a qualified Guru and to follow His instructions
I mentioned earlier that [Guru is] someone who is able to point at one’s nature; someone, who is able to show you the path to the nature of the mind. And therefore, it is a very important person in one's life, because for a Dharma practitioner, most important is to realize one’s own nature; and that has to go through teacher's instructions and guru’s blessing.
The Guru is the most important teacher – other teachers are not able to give us such realization
I actually explained earlier. One student may have many teachers but “Root” means the main teacher. Then come to "Yoga". "Yoga" is like a union in fundamental reality. "Yoga" is the realization of that happy state. For a dharma practitioner, the main reason to go for dharma practice is to have that realization, the genuine realization. And that has to rely on the meditation. What kind of meditation?
All the teachings, all the masters of the teaching, the great Vajrayana or Dzogchen [masters] request highly the devotion first and then the intelligence
Therefore, all the teachings, all the masters of the teaching, the great Vajrayana or Dzogchen [masters] request highly the devotion first and then the intelligence.