Collection of historical essays by the outstanding Austrian economist, Nobel Prize laureate Friedrich Hayek and his memories of his teachers and colleagues - economists of the Austrian school and European liberals of the first half of the 20th century (K. Mengere, I. Schumeter, F. Vizer, L. von Mises, B. de Juvenel, B. Leoni et al.). It tells about the development of liberal ideas in Germany in the beginning and middle of the 20th century.