Those who knew the famous philosopher Bertrand Russell at the turn of the century referred to him as 'the Day of Judgement'. This acclaimed selection of his early letters, available in paperback for the first time, reveals the full scope of Russell's life and innermost thoughts up to the First World War. It includes letters to his first wife, Alys Pearsall Smith, reveals the background to his now famous work in philosophy and the foundations of mathematics and how his mind was stirred by socialism, free trade and votes for women. It also contains letters on his famous affair with Ottoline Morrell, providing yet another insight into one of the great intellectual figures of the twentieth century.