Vitality

Vitality

Etymology: From Latin vita [1], which means life.
Outside of its own existence or source, life is only recognized through some form of expression or dynamic. A living organism experiences its own life from the internal dynamics of its own being, something not observable from outside - in the absence of an expression or dynamic.
Can there be vitality (life) with no expression or dynamic (internal or external)? By this definition the answer would need to be : "No."

For the submarine HMS Vitality, see HMS Untamed (P58).

For the patrol boat USS Vitality, see HMS Willowherb (K283).