Full-body colossal, world-sized ancient oak with white bark resembling a silver birch tree named Bartleby. The tree is in full bloom, with millions of soft golden and white petals. He has a wise, and benevolent face naturally formed into his thick, gnarled wooden trunk. He has a hauntingly beautiful, fine-featured face with an intelligent, and sorrowful gaze, showing he is still 'sane' but fading. Long, thin, and silky hair is carved into the white wood of the trunk. His eyes are unique: one is a swirling cosmic nebula representing the past, and the other is a bright, clear blue representing the future. His canopy is so vast it covers the entire sky, with golden sunbeams piercing through the thick green leaves. Cinematic lighting, hyper-detailed bark, epic fantasy style, 8k resolution.