The work titled (Treasury of Secret Sciences), authored by Mustafa İloğlu , is a prominent Turkish-language compendium focused on the "Havas" (occult/esoteric) sciences.

Mustafa İloğlu is a prominent Turkish researcher, author, and lecturer in the fields of , bio-energy , numerology (ebced ilmi) , astrology , and traditional healing methods . His lifetime work, the Gizli İlimler Hazinesi (The Treasure of Esoteric Sciences), is a multi-volume series that aims to bridge ancient wisdom—from Islamic mysticism, Hermeticism, and Anatolian folk traditions—with modern spiritual seekers.

As Selim scrolled through the pages, the ambient noise of the city outside—the honking taxis, the distant trams—faded into a heavy, absolute silence. He realized the PDF wasn't just a book; it was a rhythmic sequence of symbols designed to shift the reader's perception.

Mustafa Iloğlu compiled these volumes during the 20th century, drawing from a vast array of Islamic and pre-Islamic traditions. The work is not an original invention but rather an encyclopedic gathering of older manuscripts, oral traditions, and religious scholarship. At the time of its release, it represented one of the most comprehensive attempts to document "hidden sciences" (Havas) in a language accessible to the general public. Understanding the "Hidden Sciences"

"Gizli Ilimler Hazinesi 9" (which translates to "Secret Treasury of Sciences 9" in English) is a book written by Mustafa Iloglu, a Turkish author known for his works on spirituality, mysticism, and esoteric sciences. The book is part of a series that explores various aspects of spirituality, philosophy, and personal growth.

Mustafa İloğlu’nun "Gizli İlimler Hazinesi" serisi, İslâm tasavvufu, batınî ilimler, tasarruf ve geleneksel metafizik konularına ilgi duyan okuyucular arasında tanınan bir çalışmadır. Serinin dokuzuncu cildi başta ezoterik öğretiler, sembolizm, rüya tabirleri ve uygulamalı derinlikler olmak üzere hem tarihî kaynaklara hem de çağdaş yorumlara dayanarak okuyucuya rehberlik etmeyi amaçlar.

Systems for determining one's "star name" (yıldızname) and understanding the influence of planetary movements on human temperament.