is named for him and a cast of his bust by Epstein stands in its foyer. The building formerly known as Humanities Lime Grove at the University of Manchester was renamed the Samuel Alexander Building in 2007. It was given Grade II listed building status by English Heritage on 12 February 2010. As in Melbourne, a cast of his bust by Epstein stands in its foyer. Philosophical ideas Two key concepts for Alexander are those of an "emergent quality" and the idea of emergent evolution: His task, as in any metaphysical theory, was to account for every aspect of existing reality in the simplest and most economical basis. Alexander's idea was to start with space and time, each of which he regarded as inconceivable without the other, in fact mutually equivalent. Out of this, pure spacetime emerges, through a process Alexander describes simply as "motion", the stuff and matter that make up our material world: Alexander absolutizes spacetime, and even speaks of it as a "Entity|stuff" of which things are made. At the same time he also says that spacetime can be called "Motions" – not motion in the singular, but complexes of motions with kaleidoscopic changes within a continuum. So one might say that for Alexander motion is primitive, and space and time are defined through relations between motions. In Space, Time, and Deity Alexander held that an object may be before a consciousness, but is not in it; consciousness of an object is not the same as consciousness of one's consciousness of the object. For example, an object such as a chair may be apprehended by a consciousness, but the chair is not located within that consciousness; and, the contemplation of the chair is distinct from thinking about the act of contemplating the chair. Further, since the contemplation of an object is itself an action, in Alexander's view it cannot be "contemplated", but only subjectively experienced, or "enjoyed". Alexander asked the question: Alexander was a contemporary of A. N. Whitehead, whom he influenced, and mentored others who went on to become major figures in 20th-century British philosophy. R. G. Collingwood contended Alexander to be a "philosophical genius of very high order". His views have been described as panentheistic. Books Moral Order and Progress (1889) Locke (1908) Space, Time, and Deity (1920), Macmillan & Co., reprinted 1966 by Dover Publications, reprinted 2004 by Kessinger Publications: "volume one" : online