  As with all the Presocratics, Anaxagoras’ work survives only in fragments quoted by later philosophers and commentators; we also have testimonia about his views in many ancient sources. The standard collection of Presocratic texts (both fragments and testimonia) is H. Diels and W. Kranz, Die Fragmente der Vorsokratiker, in which Anaxagoras is given the identifying number 59. The Greek text and translations can also be found in Gemelli-Marciano, 2007–2010; Graham, 2010; and Laks and Most, 2016a and 2016b.  (For discussion of the sources for the Presocratics, and problems associated with them, see the article on Presocratic Philosophy.) Any discussion of Anaxagoras’ views must be a reconstruction that goes beyond the few details that we have in the verbatim quotations, though informed by the evidence of the fragments and testimonia. It should be kept in mind in reading the following account that scholars disagree and that other interpretations are possible.