No More Learning

So when the faithful pencil has design'd
Some bright Idea of the master's mind, 485
Where a new world leaps out at his command,
And ready Nature waits upon his hand;
When the ripe colours soften and unite,
And sweetly melt into just shade and light;
When mellowing years their full           give, 490
And each bold figure just begins to live,
The treach'rous colours the fair art betray,
And all the bright creation fades away!