Meanwhile he was finding more sympathetic allies. First among them was William Allen (1770-1843), chemist, of Plough Court. Allen was a Quaker; a man of considerable scientific tastes; successful in business, and ardently devoted throughout his life to many philanthropic schemes. He took, in particular, an active part in the agitation against slavery. He was, as we have seen, one of the partners who bought Owen's establishment at New Lanark; and his religious scruples were afterwards the cause of Owen's retirement. These, however, were only a part of his multifarious schemes. He was perhaps something of a busybody; his head may have been a little turned by the attentions which he received on all hands; he managed the affairs of the duke of Kent; was visited by the Emperor Alexander in 1814; and interviewed royal personages on the Continent, in order to obtain their support in attacking the slave-trade, and introducing good schools and prisons. But, though he may have shared some of the weaknesses of popular philanthropists, he is mentioned with respect even by observers such as Owen and Place, who had many prejudices against his principles. He undoubtedly deserves a place among the active and useful social reformers of his time. I have already noticed the importance of the Quaker share in the various philanthropic movements of the time. The Quaker shared many of the views upon practical questions which were favoured by the freethinker. Both were hostile to slavery, in favour of spreading education, opposed to all religious tests and restrictions, and advocates of reform in prisons, and in the harsh criminal law. The fundamental differences of theological belief were not so productive of discord in dealing with the Quakers as with other sects; for it was the very essence of the old Quaker spirit to look rather to the spirit than to the letter. Allen, therefore, was only acting in the spirit of his society when he could be on equally good terms with the Emperor Alexander or the duke of Kent, and, on the other hand, with James Mill, the denouncer of kings and autocrats. He could join hands with Mill in assailing slavery, insisting upon prison reform, preaching toleration and advancing civilisation, although he heartily disapproved of the doctrines with which Mill's practical principles were associated. Mill, too, practised--even to a questionable degree--the method of reticence, and took good care not to offend his coadjutor.