He was the thesis advisor of mathematicians such as John von Neumann, Paul Erdős, George Pólya and Pál Turán.

Thanks to Fejér, Hungary has developed a strong mathematical school: he has educated a new generation of students who have gone on to become eminent scientists.

Fejér gave short (no more than an hour) but very entertaining lectures and often sat with students in cafés, discussing mathematical problems and telling stories from his life and how he interacted with the world's leading mathematicians.

Fejér and all the residents of his house were convoyed to the banks of the Danube and were about to be shot, but were miraculously saved by a phone call "from a brave officer".

Once he was very angry with a colleague who happened to be a topologist, and explaining the case at length he wound up by declaring '... and what he is saying is a topological mapping of the truth'.

He carefully cultivated his talent of raconteur; when he told, with his characteristic gestures, of the little shortcomings of a certain great mathematician, he was irresistible.

The hours spent in continental coffee houses with Fejér discussing mathematics and telling stories are a cherished recollection for many of us.

Fejér presented his mathematical remarks with the same verve as his stories, and this may have helped him in winning the lasting interest of so many younger men in his problems.

These words stuck in my memory and years later I came to think that they expressed an essential aspect of Fejér's mathematical talent; his love for the intuitively clear detail.

Yet he could perceive the significance, the beauty, and the promise of a rather concrete not too large problem, foresee the possibility of a solution and work at it with intensity.