"Grown lighter than breath, she is set free in our remembering. Grown brighter than vision, she is hidden in all that is, and cannot be lost">

Dearest Mandy - how I too wish you were still here. I have so many memories of you - a wonderfully warm, clever, indomitable woman, and constant friend of so many years, with whom laughter and tears have been shared, debates and informed exchanges of ideas, and the sharing of some of our childrens' magic moments. Thank you Mandy for all that and more. Shine on brightly you diamond xxxx

Helmuth Hausen, "Heat Transfer in Counterflow, Parallel Flow & Cross Flow". Translated from the German by Mandy S Sayer, Published by McGraw-Hill in 1983. As the Editor of this translation, I can think of no better tribute than a letter I received from the now late Professor Hausen: "Gladly I use this occasion to thank you and Mrs Sayer for the enormous work and trouble you took in translating and editing my book. Please give my compliments to Mrs Sayer. Yours sincerely, Helmuth Hausen." For my part, I shall always remember Mandy's kindness and generosity of spirit during the long period while this translation was being prepared. A friendship between Many and Joe on the one hand and my wife Joan and myself on the other was firmly consolidated. We shall never forget Mandy although the copy of the translation sits on my bookshelf will always remind me of her.