Controlling the position of one's body and keeping a straight back are not contemplation, but can in fact become an obstacle to contemplation. ...when leaving the body 'uncontrolled' is spoken of, what is meant is simply allowing the body to remain in an authentic, uncorrected condition, in which it is not necessary to modify or improve anything. This is because, since all our attempts at correcting the body come from the reasoning mind, they are all false and artificial.
Namkhai NorbuDuality is the real root of our suffering and of all our conflicts. All our concepts and beliefs, no matter how profound they may seem, are like nets which trap us in dualism. When we discover our limits we have to try to overcome them, untying ourselves from whatever type of religious, political, or social conviction may contain us. We have to abandon such concepts as 'enlightenment', 'the nature of the mind', and so on, until we no longer neglect to integrate our knowledge with our actual existence.
Namkhai Norbu