{"collection":"Sacred Texts: The Classics","full_text_available":false,"graph_url":"https://unchartedknowledge.5gfusion.net/v2/api/page/sacred_texts_v1_cla_ari_oth_oth16_htm/graph","html_url":"https://unchartedknowledge.5gfusion.net/v2/page/sacred_texts_v1_cla_ari_oth_oth16_htm","id":"sacred_texts_v1_cla_ari_oth_oth16_htm","license":"unknown_pending_legal_review","rights_basis":"sacred_texts_v1_preview_gate_primary_text_only; acquisition-method/ToS and compilation-copyright questions still open, not resolved by this gate","source":"sacred_texts_v1","source_url":"https://unchartedknowledge.5gfusion.net/browse/cla/ari/oth/oth16.htm","summary":"The shape of the heaven is of necessity spherical; for that is the shape most appropriate to its substance and also by nature primary. First, let us consider generally which shape is primary among planes and solids alike. Every plane figure must be either rectilinear or curvilinear.","tags":[],"text":null,"title":"Aristotle: On The Hevens: Book II: Chapter 4","tradition":"Sacred Texts: The Classics","translated_text":null,"word_count":996}