Rooted but Flexible

Heard this the other day: The principles never change, but the methods always do.  What a solid management philosophy this makes for us Christ followers. Principles are defined as:  fundamental truths that serve as the foundation for a system of beliefs. Our biblical core beliefs are the basis of who we are and what we do. And that applies to how we work, lead and manage. But the methods, those change based on the circumstances and the people involved. So we need to be flexible, not rigid. Deeply rooted, but like the branches of a tree, sway with the wind. So how about you? Are your principles well rooted but flexible enough for change?