Earth has no sorrow that earth cannot heal. (John Muir) The best of John Muir: 332 quotations, the distillation of his thought, the essence of his beliefs. Muir was the foremost conservationist of his time: nature writer, social critic, realist, a romantic, a visionary. If asked for a succinct statement of his beliefs, Muir might have replied: In every walk with nature one receives far more than he seeks.