Question: Turtles All the Way Down is the first published work by John Green since what book whose title comes from "Julius Caesar"?

<P0-S0> The Fault in Our Stars is the sixth novel by author John Green, published in January 2012. <P0-S1>  The title is inspired by Act 1, Scene 2 of Shakespeare's play "Julius Caesar", in which the nobleman Cassius says to Brutus: "The fault, dear Brutus, is not in our stars, / But in ourselves, that we are underlings." <P0-S2>  The story is narrated by Hazel Grace Lancaster, a 16-year-old girl with cancer. <P0-S3>  Hazel is forced by her parents to attend a support group where she subsequently meets and falls in love with 17-year-old Augustus Waters, an ex-basketball player and amputee. <P0-S4>  A feature film adaptation of the novel directed by Josh Boone and starring Shailene Woodley, Ansel Elgort and Nat Wolff was released on June 6, 2014. <P0-S5>  Both the book and its film adaptation were met with strong critical and commercial success. <SEP> <P1-S0> "She's So Modern" is a song by The Boomtown Rats. <P1-S1>  It was the first single taken from the band's second album "A Tonic for the Troops", whose title comes from a line in this song: "Charlie ain't no Nazi, she just likes to wear her leather boots, 'cos it's exciting for the veterans and it's a tonic for the troops". <P1-S2>  The single continued the Rats' high-energy post-punk/new wave sound that had typified earlier releases, but its fame would later be eclipsed by that of the band's more ballad-like global hit "I Don't Like Mondays". <P1-S3>  It has been described as "harmlessly smirking bubblegum "a la" The Knack". <SEP> <P2-S0> Turtles All the Way Down is an upcoming novel by author John Green. <P2-S1>  It will be published on October 10, 2017. <P2-S2>  It will be his fifth solo novel, and his seventh overall. <P2-S3>  Its publication was announced during VidCon 2017, the online video conference co-founded by Green and his brother Hank. <P2-S4>  It is his first published work since his 2012 novel "The Fault in Our Stars". <SEP> <P3-S0> Gaius Crastinus (c. 85 BC – 48 BC) was a soldier in Julius Caesar's 10th legion during his Gallic Wars. <P3-S1>  He had first joined either the 8th or 9th legion in 65 BC, when Pompey Magnus had first raised these two legions in Spain. <P3-S2>  He transferred over to the 10th legion as a junior-grade centurion in 61 BC when it was first formed, after being handpicked by Caesar. <P3-S3>  After joining the 10th legion, he commanded a Century. <P3-S4>  Crastinus fought throughout Caesar's Gallic campaigns, and was present at the Battle of Alesia, where he witnessed the surrender of the Gallic chieftain Vercingetorix to the forces of the Roman Republic. <P3-S5>  Early in the war, Crastinus commanded his unit as it repelled an attempted crossing of a river by the Helvetii. <P3-S6>  Crastinus, whom Caesar considered to be amongst his best soldiers, was promoted by Caesar to the rank of Primus Pilus, or "First File" Centurion. <P3-S7>  This rank was one of exceptional prestige, since centurions of this rank commanded the first ("primus"), and most important, century in a Legion. <P3-S8>  With this rank, Crastinus also would have outranked all other centurions in his legion, as it was the highest possible rank of any enlisted Roman soldier.