Academician P.V. Simonov is known, first of all, as the founder of "Information theory of requirements and behaviour". He was the first, who declared that requirements are the main original source of behaviour's activity, evolution's regulator, the origin of creation and motive power of individual and collective actions of human beings and animals. In our paper we analyze some positions of Simonov's conception about "agoists" and "altruists", which has the grate practical value and are very actual today.