Congratulations! Sixty is a good age. The age to do science for the sake of science (rather than a position, etc.).

Best wishes of health and success,
Yuri Gurevich

It is a pleasant thing for me to learn of your approaching 60th birthday as it gives me opportunity of adding my good wishes to those of your many colleagues. Your life has been so full of great achievements and well-earned successes in mathematics, cybernetics and informatics that you must feel great satisfaction. Please accept my heartiest congratulations.

With best regards,
Nikolaj

Happy birthday to you! Be healthy and wealthy!

best wishes
Kalacheva Svetlana

Let me express my cordial congratulations to you, my dear friend and colleague, whom I know from of old as a brilliant scientist and personality, with the occasion of your 60th anniversary!

I wish you long, happy and healthy life, success and prosperity, new achievements in all the spheres of your activity.

Fondly,
Hrant Marandjian

Please accept my sincere congratulations to your birthday. I wish you always to remain merry, your encouraging optimism to be everlasting, and, of course, I wish you happiness, strong health and new great theorems.

Your friend Sasha.

The group of Mathematical Logic in Lithuania have good traditions of many years standing to cooperate with the famous St. Petersburg's group of Mathematical Logic. We are proud of this our cooperation very much and are grateful you, as one of prominent member of this group, for your well-wishing contacts with us, help to train the specialists and scientific disscusions and advices.

We eager to congratulate you on occasion of your anniversary directly in Creteil, but anyway

On behalf of Lithuanian mathematical logicians
Aida & Regis

Please accept my congratulations to your birthday.
I wish you a happy, healthy, exciting and wonderful life
as it was before. Due to the reality of our days my
message may remind you how many people around
the world have a great pleasure of knowing you.

Sincerely yours,
Ludmila Chernobrod

In Italy your birthdate is celebrated as Feriae Augusti since the times the Emperor ordered to do so. Therefore you should count upon many happy returns...

Egon Boerger

Let me express my cordial congratulations to you, with this special occasion of your 60th anniversary!

With all my wishes for an happy and healthy life, for success both personnal and for the entire LACL...

Prof. Didier GEIGER

Not that i finf the number chherful, but... this is the best we have following you steps

misha

Congratulations for so many past achievements

and many more future successes to come

irene guessarian

My best greetings to your birthday.

I wish you new great successes in all areas, always and everywhere.

All the best

It is a honor and pleasure to join the chorus of congratulations.

Your results and ideas have been a source of inspiration for scientific community for over thirty years.

But I am happy to see through this page, that I am not alone to admire also your thoughts about life, salted with a grain of irony, but beaming with a realistic yet unfailing optimism.

Let the forthcoming years bring you a deep scientific satisfaction, and many experiences of beauty and happiness.

As a responsable of Computer Science department, I am very honored to show, for this birthday event, our great respect for your person and admiration for your past scientific work and your ability to initiate and stimulate new researchs with a great enthusiasm and a lot of energy.

Receive our congratulations and best wishes for a lot of happy events in the future, in your scientific and personal life.