"John Locke's rule of thumb for how much natural property one may morally accumulate is known as the "Lockean proviso". This proviso states that an individual can appropriate natural resources as long as there is "enough, and as good left in common for others". In other words, an individual can acquire property from nature as long as there is still enough of that resource available for others to use and enjoy. This ensures that the acquisition of property does not harm others and does not lead to a situation where some people have too much while others have too little. The Lockean proviso is often cited as an important principle in debates about property rights and resource management." (ChatGPT, 2023)