"And besides your astonishing skill, I fancy that you possess much valuable knowledge of glass-making.

You cannot have worked for my father so many years without learning some of the things he has taken great pains to hide from his own sons." He spoke the last words in a somewhat bitter tone, quite willing to let Zorzi know that he felt himself injured.
"If I have learned anything of that sort by looking on and helping, when I have been trusted, it is not mine to use elsewhere," said Zorzi, rather proudly.
"That is a fine moral sentiment, my dear young friend, and does you credit," replied Giovanni sententiously.

"It is impossible not to respect a man who carries a fortune in his head and refuses to profit by it out of a delicate sense of honour." "I should have very little respect for a man who betrayed his master's secrets," said Zorzi.
"You know them then ?" inquired the other with unusual blandness.
"I did not say so." Zorzi looked at him coldly.
"Oh no! Even to admit it might not be discreet.

But apart from Paolo Godi's secrets, which my father has left sealed in my care--" At this astounding falsehood Zorzi started and looked at Giovanni in unfeigned surprise.
"-- but which nothing would induce me to examine," continued Giovanni with perfect coolness, "there must be many others of my father's own, which you have learned by watching him.

I respect you for your discretion.