What did Oscar Wilde mean when he wrote To do nothing at all is the most difficult and intellectual thing.?

he means that when you do nothing at least you get rest for your body and brain for awhile . it is difficult because its an idle thing , you get bored and lazy .

Wilde was a wit. He came up with this statement as an observation (possibly a justification or rationalization) of the act of doing simply nothing.

In today’s world, especially in the so-called First, or developed world, it’s increasingly hard to be still and to do nothing at all. The phone is ringing or humming with texts, the email box is overflowing, social networks “bombard” one with various requests, comments & causes as well as jokes, memes & ads. A lot of people appear to be in a rush from somewhere to somewhere, chasing money, the latest trend, renown, relationships, whatever.