Unfortunately all Supreme Court justice's opinions on various topics are difficult to find in one place. Te see what a justice had to say on a particular topic, go to Google and do a search using this format"
"name of the justice" opinion "topic phrase"
Your search will look like this:
"Ruth Bader Ginsberg" opinion "freedom of speech"
"Oliver Wendell Holmes" opinion "Bill of Rights"
"Stephen Breyer" opinion "
To learn a justice's thinking on a particular topic, look for news articles and political sites, paying attention to the bias of that particular site. If you aren't sure about a news site, you can learn about it here:
Media Bias/Fact Check