Please note, This question is a bit different than this one: Intellectual Property Issues associated with a Public Speach?
I am trying to sell some T-shirts online by adding my artwork. At the same time, I found that some T-shirt for sale online have some well-known quotes. I wonder where the line is where a well-known quote becomes copyright infringement. I found this one https://www.redbubble.com/i/t-shirt/Your-time-is-limited-so-don-t-waste-it-living-someone-else-s-life-by-virusn1/45379132.IJ6L0.XYZ
This is a well-known quote from Steve Jobs and I assume his Intellectual Property. Can people just use it and make money off of it? Would it make a difference when the shirt also had Steve Jobs' name on it? Or what if Steve Jobs were still alive?