Her early research 'laid the foundation' [=provided the basis] for many important medical discoveries.
These charges have no 'foundation' in fact. [=there are no facts that support these charges]
The book explains the moral 'foundations' on which her political career was built.
(..) than just a rough patch. In a matter of months, you've experienced the very worst of life. And the very best. A pendulum swing like that is enough to shake even the strongest foundations. But you survived. And instead of trying to forget this bad history... I think you should use it as an example (..)2014 Annabelle