I think pagination is a buzz word for all CMS. In WordPress, default pagination is not attractive. So it will be better to use a plugin. And i wish you will think that wp-pagenavi is the best solution here. And it is too easy to integrate it in Thesis theme. As a Thesis theme user you are using thesis openhook plugin already.
Now just follow the steps to add pagenavi in Thesis theme.
- Open Apperance > Thesis Openhook.
- Find After Content.
- Just paste the code in the box.
<?php cr_pagenavi(); ?>
- Check Execute PHP on this hook and click save.
All most have done, now enjoy.