* Formal: The Constitution guarantees the right to free speech and assembly.
* Historical: The framers of the Constitution envisioned a government of limited power.
* Figurative: After years of struggling, she finally found her own personal constitution, a set of values she lived by.
* Informal: The company's constitution was outdated and needed to be revised to reflect its modern goals.
The best sentence will depend on the specific context you're using it in.