Karl Johann Kautsky (; German: [ˈkaʊtski]; 16 October 1854 – 17 October 1938) was an Austrian-born Marxist theorist. One of the most authoritative promulgators of orthodox Marxism, he was for decades the leading theorist of the Social Democratic Party of Germany (SPD) and the Second International. His influence was so pervasive that he was often called the "Pope of Marxism", with his views remaining dominant until the outbreak of World War I in 1914. His influence extended beyond Germany, shaping the development of Marxism in the Russian Empire, where he was seen by figures like Vladimir Lenin as the leading authority on Marxist theory.
Born in Prague and educated in Vienna, Kautsky became a Marxist in the early 1880s while in exile in Zurich. He founded the journal Die Neue Zeit in 1883 and was its editor for 35 years. From 1885 to 1890, he lived in London, where he became a close friend of Friedrich Engels. Following the repeal of Germany's Anti-Socialist Laws, he authored the theoretical section of the SPD's 1891 Erfurt Program. His commentary on the program, The Class Struggle, became a popular and widely circulated summary of Marxism. Kautsky's theoretical framework reinterpreted Karl Marx's critique of political economy into a doctrine of historical-empirical laws predicting the inevitable concentration of capital, polarisation of society, and immiseration of the working class.
Kautsky's orthodox Marxism advocated a gradualist, evolutionary approach to socialism. He argued that a socialist revolution was inevitable but could not be forced prematurely. The role of a socialist party was to organise the working class, win political reforms, and improve workers' lives through the institutions of bourgeois parliamentary democracy, until material conditions were ripe for the transition to socialism. This "centrist" stance, positioned between reformism and revolutionary radicalism, drew him into major conflicts. He defended Marxist orthodoxy against the revisionism of Eduard Bernstein, and opposed the revolutionary spontaneity advocated by Rosa Luxemburg.
Kautsky's pre-war influence collapsed after 1914. He opposed the SPD's decision to support the German war effort, which led him to break with the party and co-found the anti-war Independent Social Democratic Party of Germany (USPD) in 1917. After the war, he became a prominent critic of the October Revolution, denouncing it as a premature coup that had established a new form of dictatorship. He argued that the Bolsheviks' methods had betrayed the democratic principles he saw as essential to socialism. He rejoined the SPD in 1922 but his influence steadily declined. He fled to Amsterdam after the 1938 Anschluss of Austria, and died there the same year. Vilified by Leninists as a "renegade", Kautsky is seen by others as a consistent proponent of democratic socialism whose work continues to influence modern currents.
Karl Kautsky was born in Prague on 16 October 1854, then part of the Austrian Empire. His parents were Johann Kautsky, a Czech theatrical scene designer, and Minna Jaich, an Austrian actress and writer of Czech descent. The family moved to Vienna when Kautsky was seven years old in 1863. Despite Kautsky's later efforts in his memoirs to suggest a vague proletarian background, his immediate family was not working class. Though his parents faced some financial difficulties in their early married years, they had family connections to rely on. By the time Karl was six, his father provided a comfortable income, allowing for at least two servants. Karl was the eldest of four children, followed by Minna (b. 1856), Fritz (b. 1857), and Johann (b. 1864).
Kautsky maintained a particularly close intellectual relationship with his mother, Minna. She came from a family of actors and theatrical artists and, freed from household duties by the family's improved finances after 1860, turned to intellectual pursuits. She and Karl developed a shared interest in contemporary philosophy and natural science. When Karl received Ernst Haeckel's The History of Creation in 1874, they studied it together. Later, when Kautsky began writing his first socialist pieces, he would show them to his mother for advice. Minna Kautsky herself became a socialist writer, gaining a minor reputation for her romantic socialist fiction even before her son's work was known, and was admired by Friedrich Engels.
A common misconception, noted by Steenson, is that Kautsky was Jewish; he was not. His second wife, Luise Ronsperger, was Jewish, and their sons faced persecution under the Nazis, which may have contributed to this confusion.
Education and early influences
Kautsky was an avid reader from a young age. He was tutored at home until he was nine. In 1864, he began attending the Melk seminary, run by Benedictine monks, which he found oppressive. From 1866 to 1874, he attended the more progressive Academic Gymnasium in Vienna, where he studied religion, Latin, Greek, German, geography, history, mathematics, natural history, and philosophy. He was a mediocre student, partly due to chronic illness, poor eyesight, and a distrust of his teachers. His studies were also affected by his growing interest in extracurricular matters, such as the Paris Commune in 1871. He performed best in history and philosophy.
In the autumn of 1874, Kautsky entered the University of Vienna, intending to study "historical philosophy" to become a university lecturer or a middle-school teacher. He took courses in psychology, history, physical geography, and literature. A brief attempt to study law was abandoned due to illness and a self-professed lack of oratorical skill. He ultimately attended nine semesters but never took a degree, his growing socialist activities turning him away from academia. Kautsky himself felt he learned little at university due to conflicts with professors, believing that socialists were largely self-taught. Friedrich Engels later criticized Kautsky's university training for instilling a "frightful mass of nonsense" and a tendency towards hasty judgment, though he acknowledged Kautsky's efforts to unlearn these habits. However, Steenson argues that Kautsky's broad and somewhat unstructured university studies fostered his eclectic intellectual tastes, which suited him for his later role in popularizing Marxism.
During his university years, Kautsky briefly considered careers in art, like his father, and playwriting. He had written creatively from his seminary years. Inspired by his father's successful stage adaptation of Jules Verne's Around the World in Eighty Days, Karl wrote a scientific fantasy play, The Atlantic-Pacific Company, about the construction of a Panama-Nicaragua canal. It had limited success in Vienna, Graz, and Berlin in 1877–1878. Its failure, coupled with his increasing involvement in the socialist movement, led him to abandon playwriting.
Kautsky's immediate family was largely apolitical, though there was a sporadic Czech nationalism, a sympathy Karl initially shared. His political consciousness began to emerge in the summer of 1868 after a visit to rural Bohemia, where he was impressed by Czech nationalist sentiments and peasant agitation. For the next two years, he considered himself an "outspoken Czech nationalist", influenced by figures like František Palacký, who combined romantic nationalism with political liberalism. This Czech nationalism, however, did not last long in the predominantly German environment of Vienna.
Two events in early 1871 profoundly shaped Kautsky's radicalization: the Paris Commune and his reading of George Sand's romantic socialist novel, The Sin of M. Antoine. The Commune fired his imagination, stirred his sympathies for the working class, and pushed his political radicalism towards socialism. Sand's novel, which he reread many times, provided crucial emotional support during a period of isolation and family disapproval of his socialist leanings. It reinforced his ethical commitment to the oppressed and suggested that the coming of socialism would require a long process of study and development. Other early socialist influences included the historical works of Louis Blanc. By late 1871, Kautsky's Czech nationalism had evolved into a vaguely socialist, democratic radicalism. In 1873–1874, he wrote unpublished articles and stories seeking to reconcile capital and labor through education, equality, and worker cooperatives, advocating for a federal republic with extensive freedoms.