The thought is the thinker. There is no one behind it. The thought is thinking itself. It comes uninvited. You will see that when there is a strong detachment from the thought process, thoughts don’t last long.

Joseph Goldstein (1944 CE--), Joseph Goldstein, one of the first American vipassana teachers, co-founder of the Insight Meditation Society, author of numerous popular books and resident guiding teacher, and leader of retreats worldwide on insight (vipassana) and lovingkindness (metta) meditation.