Two quotes that I liked:

Doing nothing is very hard to do…. You never know when you’re finished! - Leslie Nielson
(From ‘Know your English’ in yesterday’s edition of ‘The Hindu’)

There is no pleasure in having nothing to do;
The fun is in having lots to do and not doing it!
(Got this as a forward. Many of you might have got it)
- Being a person who keeps procrastinating things, I totally agree with it :P