Kutadgu Bilig'de felsefi kavramlar
The written work of Yusuf Has Hacib titled Kutadgu Bilig forming one of the most important and oldest resources of the intellectual Turkish- Islamic history was made the subject of assessments in this study, by looking at it from the basic concepts of Islamic Thought. In this study we have conducted by basing on the concepts of knowledge, existence, politics and ethics, it was possible to see that, the appraisals made thousand years ago by Yusuf Has Hacib were valid even today. It became apparent that with these appraisals Yusuf Has Hacib influenced many intellectuals who came after him. The suggestions he made in form of solutions are preserving their validity, even today. The basic conclusion arrived at in this study, as a result of the works, can be expressed as: "the problems of human beings and the solutions that they try to find for solving these problems, are not, in general, changing". However, the way they express these and the means they use are changing. The meaning attached by Yusuf Has Hacib to such concepts as knowledge, existence, politics and ethics can be found with similar expressions in many of the works of the present day intellectuals. The clearness given to the concepts of politics and ethics, take their indispensable place in application of the current legislative systems.