Sven-Eric Liedman (born 1939) is a Swedish author and Professor Emeritus of History of Ideas at the University of Gothenburg in Gothenburg, Sweden.
He received his Bachelor of Arts degree in Theoretical Philosophy at Lund University in 1959. In 1961 he received a Licentiate of Philosophy degree in the same subject. His most important teacher in Lund was Gunnar Aspelin. He then moved to the University of Gothenburg where he received his Ph.D. in History of Ideas in 1966.
In 1966-1968 he worked at Sydsvenskan, a major newspaper in southern Sweden. In 1968 he held a temporary position at Lund University. In 1979 he was appointed Professor of History of Ideas at the University of Gothenburg, where he remained until his retirement in 2006.
Sven-Eric Liedman is the author of a well-known Swedish textbook on the history of political ideas, with the prefix "Från Platon till..." in its title. The textbook has since its first edition in 1972 been updated many times. The title has also changed to reflect the changes. The first edition was called "Från Platon till Lenin" (from Plato to Lenin). The last edition is called "Från Platon till kriget mot terrorismen" (from Plato to the War against terrorism).
Boken är en bra genomgång av den politiska filosofins historia. Dess delar om socialism och kommunism är väl genomtånkta, men avsnittet om konservatism blir smått obegripligt då Liedman har Hegel som främsta företrädare för konservatismen. Hegel beskrivs som "den ende av konservatismens mer betydande ideologer". Burke nämns bara i förbigående, vilket gör att Liedman nästan skriver om historien. Det märks också att Liedman inte riktigt behärskar de ideologier han inte själv sympatiserar med, såsom liberalismen och nyliberalismen. I övrigt mycket hög kvalitet på fakta, bra och objektivt skriven.