People are generally better persuaded by the reasons which they have themselves discovered than by those which have come into the mind of others.Blaise Pascal, 1669   He took some persuading. When the 17th Century Christian philosopher wrote that in 1669, it was as a part of a description of human intellect. But these are words which still hold true for many of us teachers who have had any level of basic training. We can all remember that one boring teacher at school or university who used to lecture us. Sometimes...