"Why are you always the BEST?" and it is perhaps this sentence by a classmate which summarizes the common feeling of those who know him well."

Melih Arat, "Leaders of Change" 2001

"Dr. Argüden is a very hard-working, fast-thinking, trustworthy individual who is always true to his word."

Dündar Aytar, “The Story Behind Privatization” 1995

"I have never known anyone who has both such a wide range of skills and such depth of knowledge and understanding in each."

W. Walker, RAND Corporation 1984

"He plans his time well. He schedules appointments in advance and sets aside periods of time when he is working on specific topics. He works long and hard hours, but I have never seen him in a time crunch that could have been avoided by proper planning."

J. Chaiken, RAND Corporation 1984

"With his superb academic background and broad experience in both the private and public sectors, he will be an invaluable asset for our continued efforts to increase the competitiveness of the Turkish economy."

Adnan Kahveci, in a letter written to the World Bank President Barber Conable, 1988

“I interpret the work you have done as pure leadership. To achieve quality, to create value, to be productive, to introduce change, to make a difference by assuming responsibility... These must be incorporated the daily mantra of our country and our citizens."

Kamil Yazici, 2002

"I believe that KalDer is the most influential quality management organization in Europe, and Yilmaz is a serious player on the national scene."

Bob Stone, President Clinton’s Energizer in Chief for Reinventing the Government

You have achieved a ‘management guru’ status, and I congratulate you for sharing your deep experience with your books.

Bülent Eczacibasi 2007

You are not only a career idol and a great mentor, but also one of the foremost thought leaders in Turkiye.  During my career at Rothschild I have witnessed first hand the admiration and respect you have gained from all segments of the Turkish business world.  I wish to express my gratitude for the opportunity to learn from you.

Selman Ruso 2010