<?xml version="1.0"?>
<oembed><version>1.0</version><provider_name>Uitgeverij Van Oorschot</provider_name><provider_url>https://www.vanoorschot.nl/en/</provider_url><author_name>joost</author_name><author_url>https://www.vanoorschot.nl/en/author/joost/</author_url><title>John Muir &#xB7; Uitgeverij Van Oorschot</title><type>rich</type><width>600</width><height>338</height><html>&lt;blockquote class="wp-embedded-content" data-secret="6YxhbaUeKF"&gt;&lt;a href="https://www.vanoorschot.nl/en/writers/john-muir/"&gt;John Muir&lt;/a&gt;&lt;/blockquote&gt;&lt;iframe sandbox="allow-scripts" security="restricted" src="https://www.vanoorschot.nl/en/writers/john-muir/embed/#?secret=6YxhbaUeKF" width="600" height="338" title="&#x201C;John Muir&#x201D; &#x2014; Uitgeverij Van Oorschot" data-secret="6YxhbaUeKF" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"&gt;&lt;/iframe&gt;&lt;script type="text/javascript"&gt;
/* &lt;![CDATA[ */
/*! This file is auto-generated */
!function(d,l){"use strict";l.querySelector&amp;&amp;d.addEventListener&amp;&amp;"undefined"!=typeof URL&amp;&amp;(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&amp;&amp;!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i&lt;o.length;i++)o[i].style.display="none";for(i=0;i&lt;a.length;i++)s=a[i],e.source===s.contentWindow&amp;&amp;(s.removeAttribute("style"),"height"===t.message?(1e3&lt;(r=parseInt(t.value,10))?r=1e3:~~r&lt;200&amp;&amp;(r=200),s.height=r):"link"===t.message&amp;&amp;(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&amp;&amp;n.host===r.host&amp;&amp;l.activeElement===s&amp;&amp;(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r&lt;s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document);
//# sourceURL=https://www.vanoorschot.nl/wp-includes/js/wp-embed.min.js
/* ]]&gt; */
&lt;/script&gt;
</html><thumbnail_url>https://www.vanoorschot.nl/wp-content/uploads/2017/11/John_Muir_Watkins_Portrait_circa_1875_Edit.png</thumbnail_url><thumbnail_width>1037</thumbnail_width><thumbnail_height>1407</thumbnail_height><description>John Muir (1838-1914) was schrijver, natuuronderzoeker en -beschermer van Schotse komaf. Hij was een van de oprichters van milieubeschermingsorganisatie Sierra Club en mede dankzij zijn inspanningen werden Yosemite en Sequoia nationale parken. Zijn boeken en essays over de natuur bereikten een miljoenenpubliek.</description></oembed>

<!--
Performance optimized by W3 Total Cache. Learn more: https://www.boldgrid.com/w3-total-cache/

Page Caching using Disk: Enhanced (Requested URI contains query) 
Database Caching 71/137 queries in 0.025 seconds using Disk

Served from: www.vanoorschot.nl @ 2026-04-21 11:41:44 by W3 Total Cache
-->