Philip Larkin

For the most part, I didn't care for him, but this one was interesting:

To put one brick upon another, 
Add a third and then a forth, 
Leaves no time to wonder whether 
What you do has any worth. 

But to sit with bricks around you 
While the winds of heaven bawl 
Weighing what you should or can do 
Leaves no doubt of it at all.