Public Domain Quotes are the quotations by world famous authors that can be used without permission for any of your work including commercial use. You can find a rich collection of interesting public domain quotes on thegoldenquotes.net with ease.
The quotes said before 1923 are primarily considered as public domain quotes. But there is another consideration too. It is 70 years after the death of the author. In some countries this period is less than 70 years. But to be safe, considering 70 years is better specially if you think of using such a quote for commercial use. In addition to this criteria, you have to be aware of whether that quote is being used as a trade mark. If so, you can not freely use it without proper permission from the respected body.
The quotes below are Public Domain Quotes and the Images are Royalty Free Images as well. Therefore you are free to share them on social media, free to embed them on your websites and free to use them even for your commercial use without any permission.