Related Clues:
- Like some monologues
- Kept hidden
- End of an era?
- Like some signs
- Extremely important
- Crucially important, essential
- Located inward
- Absolutely necessary or life-giving
- Located inside
- On the inside
- Essential to life, indispensable
- Absolutely essential
- Essential to life or critically important
- Extremely important, essential to success
- Essential to life, most important