This book includes two author's collections by Bertrand Russell, in which the great British philosopher, in his characteristic witty, impeccably logical and accurate manner, discusses the topics that worried him: the differences between Western and Eastern ideas about happiness, the relativity of truth and the triumph of illusions over common sense, about “useful” and “useless” knowledge, about the opposition between idealism and rationalism and the need for reasonable skepticism in all spheres of life - from love to politics. The publishing layout is saved in a4.pdf format.