Solidifying by the ego of its space is based on an attitude which trusts complexity. Ego places its trust on very complicated answers, complicated logic. Satipatthana [the sitting practice of meditation] is a way of simplifying the logical mind, the logical mind which...attempts
to fixate, hold onto, grasp, and thus is continually projecting something definite and solid. So the basic practice of simplifying every activity of the mind into just breathing or bodily movement reduces the intensity of the Rudra [or ego] of body.
From "Laying the Foundation" in THE DAWN OF TANTRA, page 9.
Of interest to readers:
The Spring issue of ELEPHANT features a column by Chogyam Trungpa, which will appear in each issue. ELEPHANT online is: