I had had a marvelous steak, but 'know better' by now than to say so.

[sitifan]

“Did you have a nice lunch?” she asked sweetly. I had had a marvelous steak, but know better by now than to say so. (My bold.)
Source: http://eu.newdu.com/z1322.html

Is the tense sequence in the sentence in bold logical?

 

[5jj]

It is.

 

[sitifan]

It was "know" in the link in post #1.
But in the link below, it's "knew."
大学英语精读第四册 Unit 1:Big Bucks the Easy Way_大学教材听力 - 可可英语
"Did you have a nice lunch?" she asked sweetly. I had had a marvelous steak, but knew better by now than to say so.
"Awful," I reported. "Some sort of sour fish. Eel, I think."

 

[5jj]

“I had had a marvelous steak, but know better by now than to say so. (

The speaker is referring to their general state of knowledge. Now is the moment of speaking.

"Did you have a nice lunch?" she asked sweetly. I had had a marvelous steak, but knew better by now than to say so.

The speaker is referring to their state of knowledge at the time of speaking. Now is the past time of the conversation.