Commander-in-Chief had departed this life some years previously.

• Eskisehir and Isparta

After years of being confined to the place he had been exiled, very often not even being allowed to attend the mosque or walk out to take exercise, Bediuzzaman was now free to move about as he wished. In October of 1951 he went to Eskisehir, where he stayed in the Yildiz Hotel. He met there with many of his students, of all classes, and the young in particular also members of the armed forces visited him, with airmen being in the majority. After a month or so, Bediuzzaman moved on to Isparta, where he stayed for some two months, until summoned to Istanbul where a court case had been opened against him due to a student of his at Istanbul University, Muhsin Alev, having had printed A Guide for Youth.
While in Isparta and Istanbul Bediuzzaman wrote a number of letters which he subsequently brought together and published as a small book under the title, A Key to the World of the Risale-i Nur. Before going on to describe the Guide For Youth court case in Istanbul, it is worth mentioning briefly these letters, since the small collection they form was the last piece to be added to the Risale-i Nur, and illustrate further one of the most important aspects of the Risale-i Nur its relating science to the truths of belief as described in a previous chapter, and its showing that rather than their conflicting in any way, if considered in the light of the Qur'an, science may broaden and strengthen belief. One of the pieces included in this collection, Bediuzzaman was inspired to write by the radio. The radio, which Bediuzzaman listened to from time to time, inspired him to write a brilliant exposition of the element air and its "duties" which so decisively proves Divine Unity and disproves that `nature' or `chance' could have had any hand in its creation that he reckoned that the objections to A Guide for Youth, in which it was first included, stemmed from this. Indeed, explanations of Divine Unity and the other truths of belief related to science and technology in this way, Bediuzzaman was most concerned to convey to the young and his students among university and school students. To mention these