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In his later wrirings [[Freud]] posits the existence of two broad categories of [[life instinct]]s (''[[Lebenstriebe]]'', also known as "[[Eros]]") and [[death instinct]]s (''[[Todoestriebe]]'', sometimes known as ("[[Thanatos]]").

The concept of the [[death drive]] was first articulated by [[Sigmund Freud]] in ''[[Beyond the Pleasure Principle]]'' (1920).