"The community as a whole doesn't listen patiently to critics who adopt alternative viewpoints. Although the great lesson of history is that knowledge develops through the conflict of viewpoints. If you simply have a consensus, it generally stultifies. It fails to see the problems of that consensus and it depends on the existence of critics to break up that iceberg and permit knowledge to develop. This is in fact one of the underpinnings of democratic theory. It is one of the reasons why we believe in notions of free speech and it's one of the great forces in terms of intellectual development."

"The foundation of Scotland's success - our great intellectual, social and economic flourishing - was our commitment to education. To free education for all. ... We seek to build an education system th…"

"The question is, in case some of you did not hear it, “Supposing there is a mixed marriage with respect to race; and assuming that both are of the same faith, what is there in scripture that might be …"

"The people who believe that, as a result of industrial development, life is about to become a hell, or may be one already, are guilty, at least, of sloppy pronouncements. On page 8 of Earth in the Bal…"

"A system is a set of two or more elements that satisfies the following three conditions. The behavior of each element has an effect on the behavior of the whole. The behavior of the elements and their…"