Daniel Frohman 

The man who never broke his word. There was a great deal more to him, but every one in any land who has had dealings with Charles Frohman will sign that.
I would rather say a word of the qualities that to his friends were his great adornment than about his colossal enterprises or the energy with which he heaved them into being; his energy that was like a force of nature, so that if he had ever "retired" from the work he loved (a thing incredible) companies might have been formed, in the land so skilful at turning energy to practical account, for exploiting the vitality of this Niagara of a man. They could have lit a city with it.

Charles Frohman: Manager and Man