Opening talk for the celebration of the 50th anniversary of the theory of the relativity.

Opening talk for the celebration of the 50th anniversary of the theory of the relativity.

Chemical equilibrium, classical and statistical thermodynamivs, Gibbs.

Scalar theory. Meson theory.

Lee's model, renormalizable field theory.

Lee's model, renormalizable field theory.

"Quite generally the present paper is meant rather as a program than a report on what is hoped to become a unified quantum field theory."

"Quite generally the present paper is meant rather as a program than a report on what is hoped to become a unified quantum fiel theory."

"We gave here only the first outline of what is hoped to become a unified quantum field theory."

Second edition of this manuscript. In conclusion: "Quite generally the present paper is meant rather as a program than a report on what is hoped to become a unified quantum field theory."