And Cruz has only used his own words to assuage that doubt.
Action speaks louder than words.
As an aside, the way Trump dispatches opponents is to pick at them until they reveal who they are...their personalities.
Cruz is a very smart guy...but no one seems to like him. He has lots of supporters, but his classmates at Princeton and Harvard didn't like him.
His fellow Senators don't like him.
He is certainly brilliant and a great debater.
Furthermore, it isn't necessary that a good President be a likeable person.
That said...folks just don't vote for an unlikeable person for President.
Cruz is smart as a whip...but he just isn't likeable.
He's too smart for his own good. And just doesn't know how to reign it in.
And Trump is likeable? Hmmmm.