Which sentence from the text supports the central idea? On, on! I struggled up, but my leaden feet almost refused to bear me. Lulled by the soft music of the brook, in infinite content, I sank back on to the soft carpets, and was soon in a dreamless slumber. The massive green foliage of the graceful palms was delightfully welcome to eyes smarting and sore with the glare of the eternal sand. The beauty of the night was jeweled with the brightest stars that charm the heart of man.