Create a hyperrealistic HD portrait of John Muir with a slender physique, long thick beard, and wavy, unruly hair. He should have a serene, wise expression, with a subtle smile reflecting his deep connection to nature. Dress him in 19th-century explorer attire—wool vest, cotton shirt—and place him in a beautiful natural setting: towering sequoia trees, mountains at dawn, and a warm orange-pink-gold sky. Include wildflowers, a meandering stream, and soft sunlight filtering through the trees. Light should emphasize his peaceful presence, with rays gently illuminating his face and eyes. Have animals like a deer nearby, drawn to his calm aura. The atmosphere should feel spiritual and tranquil, symbolizing the phrase "The sun shines not on us but in us."