James Allen (1864–1912) was a British philosophical writer known for his inspirational books and poetry. He is best remembered for his work As a Man Thinketh (1903), which emphasizes the power of thought in shaping one’s character and destiny. His writings combine elements of philosophy, spirituality, and self-help, often focusing on the importance of personal responsibility and self-discipline. Though he died young, his work has influenced generations of personal development writers.