Nothing, I think, which Cicero says is contradicted by Sallust, though of much that Cicero certainly did Sallust is silent.

Sallust damns him, but only by faint praise.

We may, therefore, take the account of the plot as given by Cicero himself as verified: indeed, I am not aware that any of Cicero's facts have been questioned.
Sallust declares that Catiline's attempt was popular in Rome generally.[195] This, I think, must be taken as showing simply that revolution and conspiracy were in themselves popular: that, as a condition of things around him such as existed in Rome, a plotter of state plots should be able to collect a body of followers, was a thing of course; that there were many citizens who would not work, and who expected to live in luxury on public or private plunder, is certain.
When the conspiracy was first announced in the Senate, Catiline had an army collected; but we have no proof that the hearts of the inhabitants of Rome generally were with the conspirators.

On the other hand, we have proof, in the unparalleled devotion shown by the citizens to Cicero after the conspiracy was quelled, that their hearts were with him.

The populace, fond of change, liked a disturbance; but there is nothing to show that Catiline was ever beloved as had been the Gracchi, and other tribunes of the people who came after them.
Catiline, in the autumn of the year B.C.63, had arranged the outside circumstances of his conspiracy, knowing that he would, for the third time, be unsuccessful in his canvass for the Consulship.