It shows that 'Friend of Humanity' isn't a cant phrase.

They recommend the cure to their friends.
'Are you sure it's all right ?' they are asked.

'Of course it is,' they can reply.

_'I know the man, Clem Sypher himself.'_ And the friends are convinced and go about saying they know a man who knows Clem Sypher, and so the thing spreads like a snowball.

Have you read the pamphlet ?" "It was most interesting," said Zora mendaciously.
"I thought you'd find it so.