To change an opinion without a mental process is the mark of the uneducated. Geoffrey Madan More Quotes by Geoffrey Madan More Quotes From Geoffrey Madan Never assume that habitual silence means ability in reserve. Geoffrey Madan silence luck mean Attractive Etonians who go straight onto the Stock Exchange missing University on their fathers advice: the raw material of the great bores. Geoffrey Madan missing advice father The dust of exploded beliefs may make a fine sunset. Geoffrey Madan sunset dust may The cat which isn't let out of the bag often becomes a skeleton in the cupboard. Geoffrey Madan bags skeletons cat