Soldato
From that link:
Translation: we know Lewis has a fragile ego, and if we can't strike that delicate balance between 'potential challenger to The Messiah™' and 'complete stump' then we're hosed.
Chatting about Rosberg’s replacement, Wolff explained that they have to consider the dynamic between Hamilton and the incoming driver.
“He has been a great pillar in the team’s success. When he came, everything changed, so he has played a role. It’s very important to keep him in a good place.,” he said.
Translation: we know Lewis has a fragile ego, and if we can't strike that delicate balance between 'potential challenger to The Messiah™' and 'complete stump' then we're hosed.