The Flashes collection comprises thirty-three parts or "Flashes", which expounding the fundamental truths of the Qur'an and belief, and the Practices (Sunna) of the Prophet Muhammad (PBUH), from various angles, set forth important principles for both individual and social life. Also included in this collection are the celebrated treatise on Nature and discussion on Divine Self-Subsistence, which lay open the unsound basis of Naturalist and Materialist philosophies, and demonstrate in reasoned and logical manner the necessity of Divine existence and unity. Other sections answer criticisms made by atheists of certain Qur'anic verses and Hadiths.