Develop a sentence which appropriately use the given vocabulary words
prolific, demeanor
He was prolific in his work, churning out masterpiece after masterpiece, yet he always maintained a humble and composed demeanor in public.
Complete the following task based on the instruction and optional input provided.### Instruction:
Develop a sentence which appropriately use the given vocabulary words

### Input:
prolific, demeanor

### Output:
He was prolific in his work, churning out masterpiece after masterpiece, yet he always maintained a humble and composed demeanor in public.