Thinking is an activity which has its place in certain kinds of meditation--the kind which seeks self-betterment, moral improvement, or metaphysical clarification. It is an activity which occupies the generality of its practitioners in the earlier stages. In the more advanced stages and certainly on the Short Path, the attitude towards it must change. The practitioner must seek to transcend thinking so that he can enter the stillness where every movement of thought comes to an end but where consciousness remains.
-- Notebooks Category 23: Advanced Contemplation > Chapter 7: Contemplative Stillness > # 232