The subject of the paper is social welfare maximisation in a neoclassical model of economic growth, extended by the accumulation of human capital. After introducing the model and characterising the behaviour of the economic system on the so-called balanced growth path, Phelps’ “golden rule of accumulation” is used to establish the values of the rates of investments (into real and human capital) maximising the level o f the long-term growth path of per capita consumption. At the same time the analytical limitations o f this conception in the context of the welfare maximisation is shown. Overcoming those limitations necessitates a direct reference to the preferences of individual economic agents over (per capita) consumption streams. R...