Early career
In 119 BC, when aged only 21, Crassus shot to fame for his prosecution of the proconsul Gaius Papirius Carbo, who committed suicide rather than face the inevitable guilty verdict. From this point on, Crassus was recognised as one of the foremost orators in Rome.
However, Crassus came to regret this celebrated prosecution because it brought him many political enemies. One such enemy was Carbo's son, Gaius Papirius Carbo Arvina, who followed Crassus to his province in 94 BC with the aim of gathering evidence for a revenge prosecution. Crassus was remembered by later Romans for his wise response to the younger Carbo; instead of sending him away from his camp, Crassus in fact invited Carbo into his closest circle of advisors so that he might win over his former enemy.
Little else is known of Crassus' political activities in the 110s BC. He is known to have supported the efforts of Gnaeus Domitius Ahenobarbus to create a citizen colony at Narbo Martius in 117 BC. At the age of twenty-seven, Crassus defended his relative Licinia, one of the Vestal Virgins who had been accused of breaking their vow of chastity that year. Crassus was successful during Licinia's first prosecution in front of the pontifices, and she was acquitted. However, she was prosecuted again by the special inquisitor Lucius Cassius Longinus Ravilla in early 113. This time, Crassus was not successful, and Licinia was consequently buried alive.
Crassus served as quaestor sometime around the year 109 BC. He was appointed to the province of Asia Minor. On his return journey, he studied rhetoric at Athens, but departed after a dispute with the locals. Having missed the ceremony of the Eleusinian Mysteries by only two days, Crassus requested that the Athenians repeat the affair so that he too might be initiated. When the Athenians refused, he angrily left the city. It seems Crassus related this anecdote to the young Cicero, who recorded it many years later in the De Oratore.
Crassus served as tribune of the plebs in 107 BC at the age of 33. His tribunate was as an example of a notably "quiet" one: Cicero had not realised Crassus even served as tribune until he read about it by chance in a passage of Lucilius.
Crassus probably served as aedile in 100 BC. Alongside Scaevola Pontifex (his future colleague in the consulship), Crassus put on expensive games for the people, which were remembered decades afterwards for their extravagance.
As was common with many young politicians at the start of the cursus honorum, Crassus had employed popularis overtones in his prosecution of Carbo. But over time, he became an increasingly staunch defender of conservative values.
In 106 BC, Crassus gave a speech in which he defended the Lex Servilia, a law proposed by the consul Quintus Servilius Caepio which aimed to end the equestrian monopoly on juries. Since the legislative reforms of Gaius Gracchus, jurors for a number of important courts had been drawn only from the ranks of the equites. Crassus and the other conservative senators (the optimates) wanted mixed juries drawn from both senators and equestrians. He therefore attacked the equestrian courts in a speech, considered by Cicero (who preserves the following quotation from the speech) to be Crassus' finest moment:
Save us from wretchedness, save us from the fangs of men whose cruelty can only be satisfied by our blood; do not let us be slaves to others, unless to you alone, the whole People, to whom we may and should be servants.
Crassus' oratory won the day, and the Lex Servilia was successfully passed. It was, however, to prove short-lived, as a few years later a law of Gaius Servilius Glaucia (passed either in 104 or 101 BC) restored the equestrian monopoly on the juries.
Regardless of the long-term outcome of the Lex Servilia, Crassus' speech was highly celebrated. It became a literal model of Roman eloquence, and was being studied in a textbook by the young Cicero a few years later. In the last year of his life, Crassus once again attacked the equestrian juries when he championed the legislation of Marcus Livius Drusus the Younger in 91 BC (see below).
When Quintus Servilius Caepio, the proposer of the jury law in question, was prosecuted in 103 BC by the tribune Gaius Norbanus for his catastrophic loss at the Battle of Arausio, Crassus defended him. Crassus lost the case, and Caepio was exiled.
When consul in 95 BC, Crassus successfully defended Caepio's son, Quintus Servilius Caepio the Younger, from an unspecified charge. However, Cicero notes that in this instance Crassus' defence of the younger Caepio was rather half-hearted: "for its laudatory purpose, it was long enough; but as a whole oration it was very brief".