By Ted Eytan via Wikimedia Commons
Comey claims that the Russia probe was not started by the infamous Christopher Steele Dossier, this supports the theories revolving around operation Crossfire Hurricane, but this then opens the question of what started it all then? It is likely that this is a falsehood and the Dossier was used to start the probe, this is likely because it matches up with the timeline and is logically sound.
Let us say for a moment thought that this is true and he is not telling a lie, we must assume that there is another piece of information that Comey is withholding that justified the investigation. Was this information their hatred for Trump? Was it their love of Hillary Clinton? It is all hard to say but Comey also stated in this same line of questioning that the only knew what the was told.
Source: TTN Staff