One of the best books to understand what a Muslim Mystic is trying to achieve through meditation and selfless service and love for humanity. (Google)
Reynold Alleyne Nicholson, FBA (18 August 1868 – 27 August 1945), or R. A. Nicholson, was an eminent English orientalist, scholar of both Islamic literature and Islamic mysticism and widely regarded as one of the greatest Rumi (Mevlana or Mawlana) scholars and translators in the English language.