noun
credo
KREE-doh/ˈkriːdəʊ/
A statement of guiding beliefs or principles.
He keeps his credo in a notebook beside a compass.

Etymology
Credo means “I believe,” the opening words of important Christian creeds. The name for that religious declaration broadened to any statement of guiding beliefs or principles.
In context
his credo was play what is written look to the score
More examples
- The company's credo puts customer safety ahead of profit.
- He sums up his teaching credo in three words: make learning fun.
- Their political credos differ, but both value honest debate.
Forms
credo · credos