<p><a href="https://en.wikipedia.org/wiki/Platonic_solid" class="extiw" title="w:Platonic solid">Platonic solid</a> representing one of the four <a href="https://en.wikipedia.org/wiki/Classical_element" class="extiw" title="w:Classical element">Classical element</a>, the <a href="https://en.wikipedia.org/wiki/dodecahedron" class="extiw" title="w:dodecahedron">dodecahedron</a> representing the universe
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<div class="thumb tright"><div class="thumbinner" style="width:222px;"><a href="//commons.wikimedia.org/wiki/File:Ioanniskepplerih00kepl_0081.jpg" class="image"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/3/34/Ioanniskepplerih00kepl_0081.jpg/220px-Ioanniskepplerih00kepl_0081.jpg" decoding="async" width="220" height="248" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/3/34/Ioanniskepplerih00kepl_0081.jpg/330px-Ioanniskepplerih00kepl_0081.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/3/34/Ioanniskepplerih00kepl_0081.jpg/440px-Ioanniskepplerih00kepl_0081.jpg 2x" data-file-width="1873" data-file-height="2115"></a>  <div class="thumbcaption"><div class="magnify"><a href="//commons.wikimedia.org/wiki/File:Ioanniskepplerih00kepl_0081.jpg" class="internal" title="Enlarge"></a></div>The page of <i><a href="https://en.wikipedia.org/wiki/Harmonices_Mundi" class="extiw" title="w:Harmonices Mundi">Harmonices Mundi</a></i> from which these images are taken</div></div></div>
<bdi><a href="https://en.wikipedia.org/wiki/en:Johannes_Kepler" class="extiw" title="w:en:Johannes Kepler"><span title="German mathematician and astronomer (1571–1630)">Johannes Kepler</span></a>
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1619
<a rel="nofollow" class="external free" href="https://archive.org/stream/ioanniskepplerih00kepl#page/n79/mode/2up">https://archive.org/stream/ioanniskepplerih00kepl#page/n79/mode/2up</a>