Do you subscribe to the maxim “ignorance is bliss “?

In some circumstances yes since "what you don't know can't hurt you".
Although, there are always times it's better to know.

I subscribe to it when you quote the whole thing: "Where ignorance is bliss, 'Tis folly to be wise." So, yes, sometimes it's better NOT to know.

Silence is golden is a good maxim

Depending on the situation

Sort of, in that I believe it to true in some cases. Still...