We can understand from the passage that Robin Trevelyan ____

Not just in substance but in manner too, Robin Trevelyan,
who is the Prime Minister's new righthand man, is a
politician in the old style. He avoids the flourish which
characterises modern politicians. His speeches are at best
unemotional, at worst dull. He is all but incapable of
inspiring an audience. His face is inexpressive, solid
almost. He evades making promises and is completely
lacking in vision. He is a politician whose talent has never
been to inspire the mob.