()im^:nin(j addi^vF.ss 



Delivered ov behalf of the Aaidoiiii of Sciences of the U.S.S.R. by 



Academician-Secretary of the Department of Biological Sciences, 



U.S.S.R. Academy of Sciences 



N. M. SISSAKIAN 



Ladies and Oentlenien. 



Dear C'oUeagiies, I welcome you on behalf of the U.S.S.R. Academy 

 of Sciences and the U.S.S.R. UNESCO Committee. 



We are happy to see our guests, eminent scientists from many 

 countries, who have come to discuss interesting and outstanding 

 problems. In you I also greet the important international organizations, 

 UNESCO and the International Atomic Energy Agency which, in co- 

 operation with the U.S.S.R. Academy of Sciences, have sponsored the 

 present symposium. 



We are glad to see here the representatives of these organizations. 

 In UNESCO and the International Atomic Energy Agency are com- 

 bined the efforts of many nations in working out important problems 

 of science, in spreading culture and knowledge and in the use of atomic 

 energy for the good of mankind. 



Soviet scientists are eager to establish international co-operation 

 with the aim of mutual understanding, peace and friendship among 

 nations. They are willing to use all their resources and energy to organ- 

 ize international meetings and contacts, which are so important for the 

 progress of science. 



The rapid development of science in our age, the interconnection of a 

 number of disciplines and the vast date accunudated require that 

 science should be organized on quite new lines. Individual scientists 

 cannot achieve spectacular results as they used to in the last century. 

 Large teams of research workers in scientific institutions and univer- 

 sities cannot exist in isolation. We require constant exchange of opm- 

 ions, information, data and techniques: during these contacts and 

 discussions new ideas are born and new ways of investigation are 

 discovered. The level of modern science and the rate of its development 

 make international meetings especially necessary. 



The present twentieth century is justifiably called the age of atomic 

 energy. A new', exceptionally po\\erful agent has entered the life of 

 men and advanced the solution of a number of most important prob- 

 lems. At the same time mankind is facing a number of highly important 



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