The great Churchill.
In a country where earnestness is shunned and one is not expected to be too passionate about anything, he stood tall and alone in being this leader so full of energy the world then and since has few equals. I went on to listen to some of his war time speeches, which brought to mind what the author mentioned, what might have been the most spectacular and important achievement of his: to rally the people of Britain in the face of looming invasion, that, maybe not forgetting the love for peace, the Britons found their honour and courage, and pour their heart and soul into this struggle. ("They all have the lion's heart, I only provided the roar")
Living in the relatively peaceful present, I cannot claim to fully understand the minds of the Britons in 1940/41, but perhaps merely imagining those dark times is enough to convince one how important this was, and how fortunate that Churchill has been around. (The book made speculations on the fate of Britain had a leader less strong been in Churchill's place. It was bleak at best)
The author stressed that he was the greatest Englishman of his time, I reckon he was the greatest person of his time. A few years back I was in the UK and I saw in the news that Churchill was dropped from the essential reading of History (secondary school). I couldn't believe it. The very end of book says this, "...I am persuaded that, in this later time, we are diminished if, admitting Churchill's failings and failures, we can no longer appreciate his virtues and victories."