1.0Study and practice of the Principlehttps://principle.study/en/jforelanderhttps://principle.study/en/author/jforelanderadmin/rich600338<blockquote class="wp-embedded-content" data-secret="9MdsrWDJFw"><a href="https://principle.study/en/dp/introduction/">Introduction</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://principle.study/en/dp/introduction/embed/#?secret=9MdsrWDJFw" width="600" height="338" title="“Introduction” — Study and practice of the Principle" data-secret="9MdsrWDJFw" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^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<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(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<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://principle.study/wp-includes/js/wp-embed.min.js /* ]]> */ </script> https://principle.study/wp-content/uploads/2023/12/0-en-introduction.png1200630Everyone is struggling to attain happiness and avoid misfortune. From the commonplace affairs of individuals to the great events that shape the course of history, each is at root an expression of the human aspiration for ever greater happiness.