key quotations on the subject of architecture: Vitruvius: defined the essential qualities of architecture as "firmness, commodity and delight". Johann Wolfgang von Goethe: "I call architecture frozen music". Walter Gropius: "Architecture begins where engineering ends". Le Corbusier: "A house is a machine for living in". Louis Sullivan: "... form ever follows function. This is the law", usually quoted as the architectural mantra "form follows function". Mies van der Rohe: "Less is more". Robert Venturi: "Less is a bore". Roles in architecture Professionals involved in planning, designing, and constructing buildings include: Architect – a person trained in the planning, design and supervision of building construction. Architectural intern – a person gaining practical experience while studying to qualify as an architect. Council architect – an architect employed by a local authority. Landscape architect – a person who develops land for human use and enjoyment through effective placement of structures, vehicular and pedestrian ways, and plantings. Project architect – a person who is responsible for overseeing the architectural aspects of the development of the design, production of the construction documents and specifications. State architect – a person who is generally responsible for the design and/or construction of public buildings in the state. Architectural designer – generally, a designer involved in architecture but not qualified as an architect. Architectural engineer Architectural technologist or building technologist – a professional trained in architectural technology, building design and construction, and who provides building design services. Building control officer or Approved Inspector Building inspector Clerk of works Drafter or draughtsman – a person trained in drawing up architectural drawings. Site manager Building surveyor People engaged in architecture Architects Architecture firms Architectural historians Architecture critics Architectural styles Architectural style – a specific way of building, characterized by the features that make it notable. A style may include such elements as form, method of construction, materials, and regional character. Influential contemporary and relatively recent styles include : Modern architecture – generally characterized by simplification of form and the absence of applied ornament. Postmodern architecture – has been described as the return of "wit, ornament and reference" to architecture in response to the formalism of the International Style of modernism. Deconstructivism – based on the more general theory of deconstruction, a design style characterized by fragmentation, distortion and dislocation of structure and envelope. International style or international modern– the pervasive and often anonymous style of city developments worldwide. Brutalism – the