Frohman was known to his friends as a master of epigram. Some of his distinctive sayings are these:
"The best seat at a theater is the paid one."
"An ounce of imagination is worth a pound of practicality."
"The man who makes up his mind to corner things generally gets cornered."
"You cannot monopolize theaters while there are bricks and mortar."
"When I hear of another theater being built I try to build another author."
"No successful theatrical producer ever died rich. He must make money for everybody but himself."
"Great stage successes are the plays that take hold of the masses, not the classes."
Frohman could always reach the heart of a situation with a pithy phrase or reply. On one of the rare occasions when he attended a public dinner he sat at the Metropolitan Club in New York with a group of men representing a variety of interests. He condemned a certain outrageously immodest Oriental dancer, who, at the moment, was shocking New York.
"She must have a nasty mind to dance like that," said Frohman.