It was uncharacteristichumility for Ra's to admitthat he underestimated Joker. His body...

It was uncharacteristic
humility for Ra's to admit
that he underestimated Joker. His body language,
his micro expressions the fact
that he, too, is a father it was clear
that Ra's was deeply grieved by Jason's passing, as was I. Desperate to rectify
his disservice to me he found a way
to steal Jason's body for submersion
in his Lazarus Pit as it had helped him
cheat death. Ra's used
its supernatural properties to resurrect my son. But the cost was high. While the Pit
revivifies the body its effects on the mind
are less predictable. The process drove Jason mad. [screaming] He escaped the house of al Ghul despite Ra's' efforts
to contain him. The Lazarus Pit was obvious