the rigorous application of a single principle... the fundamental axiom of modern science... In matters of the intellect, follow your reason as far as it will take you, without regard to any other consideration... In matters of the intellect, do not pretend that conclusions are certain which are not demonstrated or demonstrable. Use of that term has continued to the present day (see Thomas Henry Huxley and agnosticism). Much of Huxley's agnosticism is influenced by Kantian views on human perception and the ability to rely on rational evidence rather than belief systems. In 1893, during preparation for the second Romanes Lecture, Huxley expressed his disappointment at the shortcomings of 'liberal' theology, describing its doctrines as 'popular illusions', and the teachings they replaced 'faulty as they are, appear to me to be vastly nearer the truth'. Vladimir Lenin remarked that for Huxley "agnosticism serves as a fig-leaf for materialism". (See also the Debate with Wilberforce above.) Adult education Huxley's interest in education went still further than school and university classrooms; he made a great effort to reach interested adults of all kinds: after all, he himself was largely self-educated. There were his lecture courses for working men, many of which were published afterwards, and there was the use he made of journalism, partly to earn money but mostly to reach out to the literate public. For most of his adult life he wrote for periodicals—the Westminster Review, the Saturday Review, the Reader, the Pall Mall Gazette, Macmillan's Magazine, the Contemporary Review. Germany was still ahead in formal science education, but interested people in Victorian Britain could use their initiative and find out what was going on by reading periodicals and using the lending libraries. In 1868 Huxley became Principal of the South London Working Men's College in Blackfriars Road. The moving spirit was a portmanteau worker, Wm. Rossiter, who did most of the work; the funds were put up mainly by F.D. Maurice's Christian Socialists. At sixpence for a course and a penny for a lecture by Huxley, this was some bargain; and so was the free library organised by the college, an idea which was widely copied. Huxley thought, and said, that the men who attended were as good as any country squire. The technique of printing his more popular lectures in periodicals which were sold to the general public was extremely effective. A good example was "The Physical Basis