Final answer:
Arthur Conan Doyle, renowned for creating Sherlock Holmes, acquired a pharmacist's license before leaving medicine for writing. Other figures like William Carlos Williams also led dual careers in both fields.
Step-by-step explanation:
The author who earned his pharmacist's license before venturing full-time into the literary world is Sir Arthur Conan Doyle. Notably celebrated for creating the enduring character Sherlock Holmes, Conan Doyle initially pursued a career in medicine. Despite obtaining his degree and meeting the professional requirements to practice, his literary ambitions led him to abandon medicine. Conan Doyle's decision reflects a common narrative where individuals with expertise in one field transfer their skills and pursue success in another.
Similar to Conan Doyle, other notable historical figures such as William Carlos Williams also juggled careers in medicine and literature. Williams, unlike Conan Doyle, maintained his medical practice while writing influential works. This intersection of careers highlights the versatility and breadth of talent that individuals can possess. The transition from pharmacy to literature showcases how diverse experiences can enrich creative endeavors, contributing to a multi-faceted and accomplished life.