By meditation is meant formless meditation, that is, meditation without content. It is not a guided meditation or accompanied by words or music. Following the breath in silence is the starting point. The experience of mindfulness is gradually expanded and further refined into awareness, and finally filled with tremendous conviction, without pretence. Mediation creates the space for the subconscious mind to show itself. Teaching supports this experience and offers a gradual replacement of the ego-thought system. This opens the eyes for 'second sight': the ability to see beyond the veil of this world.
Formless meditation is advocated by Chögyam Trungpa in his book Cutting Through Spiritual Materialism. Trungpa was an influential Tibetan Buddhist meditation teacher, scholar, poet, and artist. Like many teachers from his generation, he left Tibet when the Communist Chinese took over the government. Chögyam Trungpa was a pioneer in bringing meditation and teachings of Tibetan Buddhism to the West, explaining them with great clarity and directness.
“Are the great spiritual teachings really advocating that we fight evil because we are on the side of light, the side of peace? Are they telling us to fight against that other 'undesirable' side, the bad and the black. That is a big question. If there is wisdom in the sacred teachings, there should not be any war. As long as a person is involved with warfare, trying to defend or attack, then his action is not sacred; it is mundane, dualistic, a battlefield situation.”
― Chögyam Trungpa, Cutting Through Spiritual Materialism