The principle of form follows function is connected with modernist architecture and industrial design which related to 20th century. The basic theory of this is mainly based on whether the shape of a building and architecture is based on the prospect function and purpose.
1.1Historical Background 1.1Historical背景
This formula form follow function(originally version is: form ever follow function) is created and declared by Louis Sullivan, an American architect. Though the authorship of this phrase is often wrongly believed as another American sculptor-Haratio Greenough, whose thought is before the later functionalist approach and were discovered again in 1930s. People always wrongly regard him as the authorship because he published a series of essays about form and function.
Louis Sullivan, the American architect, is the person who first put forward the phrase of form should follow function in his essay — “tall office building artistically considered” which is published in 1896. He described it like that:
It is the pervading law of all things organic and inorganic, of all things physical and metaphysical, of all things human and all things superhuman, of all true manifestations of the head, of the heart, of the soul, that the life is recognizable in its expression, that form ever follows function. This is the law.
After that, in a official occasion, the famous phrase was said by this Chicago constructs-Louis Sullivan in 1907 when he summarized the principle of design. In the theory of Sullivan, function did not simply indicate utility or practical use. On the contrary, it represents life power or life force. It more related to a kind of essential vitalize. Specifically, the essence of a thing in nature life equals to its life force, vice versa the final life force influence the exterior form. The essence of object gradually mold the key appearance of things. He apply this formula into skyscraper design, the essential aspect and outward appearance of a skyscraper seems to be closely related to grand and tall. However, in the approach of modern utilitarian, grandness and tallness sometimes means a skyscraper can not be functional.(责任编辑：BUG)