Some context: Jean-Philippe Rameau (French: [Zafilip Ramo]; (1683-09-25)25 September 1683 - (1764-09-12)12 September 1764) was one of the most important French composers and music theorists of the 18th century. He replaced Jean-Baptiste Lully as the dominant composer of French opera and is also considered the leading French composer for the harpsichord of his time, alongside Francois Couperin. Little is known about Rameau's early years, and it was not until the 1720s that he won fame as a major theorist of music with his Treatise on Harmony (1722) and also in the following years as a composer of masterpieces for the harpsichord, which circulated throughout Europe.
Unlike Lully, who collaborated with Philippe Quinault on almost all his operas, Rameau rarely worked with the same librettist twice. He was highly demanding and bad-tempered, unable to maintain longstanding partnerships with his librettists, with the exception of Louis de Cahusac, who collaborated with him on several operas, including Les fetes de l'Hymen et de l'Amour (1747), Zais (1748), Nais (1749), Zoroastre (1749; revised 1756), La naissance d'Osiris (1754), and Anacreon (the first of Rameau's operas by that name, 1754). He is also credited with writing the libretto of Rameau's final work, Les Boreades (c. 1763).  Many Rameau specialists have regretted that the collaboration with Houdar de la Motte never took place, and that the Samson project with Voltaire came to nothing because the librettists Rameau did work with were second-rate. He made his acquaintance of most of them at La Poupliniere's salon, at the Societe du Caveau, or at the house of the Comte de Livry, all meeting places for leading cultural figures of the day.  Not one of his librettists managed to produce a libretto on the same artistic level as Rameau's music: the plots were often overly complex or unconvincing. But this was standard for the genre, and is probably part of its charm. The versification, too, was mediocre, and Rameau often had to have the libretto modified and rewrite the music after the premiere because of the ensuing criticism. This is why we have two versions of Castor et Pollux (1737 and 1754) and three of Dardanus (1739, 1744, and 1760).
What did he work on with Voltaire?
A: the Samson project

Some context: Juan Sebastian Veron (Spanish pronunciation: ['xwan sebas'tjam be'ron]; born 9 March 1975) is a retired Argentine footballer who as the chairman for Estudiantes de La Plata, where he had served as Director of Sports. A former midfielder, Veron's career started in Estudiantes, continued in Argentina's Boca Juniors, and included stints in several clubs in the Italian Serie A (where he won the Scudetto with Lazio and with Internazionale, and a UEFA Cup with Parma), and England's Manchester United and Chelsea. In 2006, Veron returned to Estudiantes, where he remained until his retirement in 2014, aside from a brief spell with Brandsen. He has announced his short return to first team will occur in Copa Libertadores 2017.
Veron was called up for the 1998 FIFA World Cup in France, where Argentina was eliminated by the Netherlands in the quarter-finals. A rumour (never confirmed) that Veron had failed an internal doping test, and allegations of laziness hampered his relationship with the media and fans. He was called up again for the 2002 World Cup in Korea/Japan, where Veron was regarded as a key player and captained the side in place of the injured Roberto Ayala. Some fans held him personally responsible for Argentina's dismal performance, which included a loss to England and elimination in the group phase.  After then-national coach Jose Pekerman omitted him from the 2006 World Cup squad, his replacement, Alfio Basile recalled Veron to the national squad in February 2007, based on his performance in Estudiantes's 2006 championship team. Veron was a starter in the Argentine team that reached the final of Copa America 2007. Due to injuries and Estudiantes's busy schedule, Veron did not feature in the immediate plans of national coach Diego Maradona, but was recalled to the Argentine squad as a second-half substitute in the 4-0 win over Venezuela on 28 March 2009, Maradona's first competitive game in charge of the national team. He also played in the starting XI in a 2010 FIFA World Cup qualifier against Colombia on 6 June 2009 and was selected by manager Diego Maradona in the final 23-man squad for the finals of the 2010 FIFA World Cup.  Veron started Argentina's first group match against Nigeria, and provided the assist for Gabriel Heinze's goal. After missing the match against South Korea due to injury, Veron returned to the starting line-up against Greece and played the full 90 minutes as Argentina won 2-0. He came on as a substitute for Carlos Tevez in the 69th minute in Argentina's 3-1 victory over Mexico in the Round of 16, but did not feature during the quarterfinal loss to Germany.  On 26 August 2010, Veron retired from international football. Nevertheless, Veron appeared again for Argentina in the 2011 Superclasico de las Americas, a two legged, non-FIFA sanctioned exhibition, between Argentina and Brazil's domestically-based players.
How did that effect his career?
A:
After then-national coach Jose Pekerman omitted him from the 2006 World Cup