Augustus, according to a letter, was surprised at the clarity of Claudius' oratory. His work as a budding historian damaged his prospects for advancement in public life.
According to Vincent Scramuzza and others, Claudius began work on a history of the Civil Wars that was either too truthful or too critical of Octavian—then reigning as Augustus Caesar.
Claudius' infirmity probably saved him from the fate of many other nobles during the purges of Tiberius's and Caligula's reigns; potential enemies did not see him as a serious threat.
His survival led to his being declared Emperor by the Praetorian Guard after Caligula's assassination, at which point he was the last man of his family.
He was seen as vulnerable throughout his reign, particularly by elements of the nobility.
Claudius was constantly forced to shore up his position; this resulted in the deaths of many senators.
These events damaged his reputation among the ancient writers, though more recent historians have revised this opinion.
Many authors contend that he was murdered by his own wife.
1 August 10 BC – 13 October 54 AD) was Roman emperor from 41 to 54.
A member of the Julio-Claudian dynasty, he was the son of Drusus and Antonia Minor.
After his death in 54 AD (at age of 63), his grand-nephew and adopted son Nero succeeded him as Emperor.
His 13-year reign (slightly longer than Nero's) would not be surpassed by any successors until that of Domitian.
But the damage was done, and his family pushed him into the background.