Wellspring (noun)

A source of a continuous supply of something, especially an inspiration or creative ideas.

Origin:

Derived from the old english word 'wellspring', which means a spring of water, originated in the 15th century.

Examples:

1. Nature is a wellspring of inspiration for the artist.
2. His imagination is a wellspring of creativity.
3. She is a wellspring of energy and enthusiasm.
4. Music is a wellspring of emotional expression for the composer.
5. The writer's wellspring of ideas never seems to run dry.