The ethics 'earth care', 'people care' and 'fair share' form the foundation for permaculture design They can be seen as 3 separate statements but in my opinion they are just the 3 sides of the same coin...
The image above is the well-known standard, showing showing the ethics; 'earth-care', 'people-care' and 'fair share'.
A slightly more, hmmm... 'intellectual' version of the same thing is here;
for me, the 'personal' part is the equivalent of 'fair share', 'social' represents 'people care' and 'conservation'='earth care'.
I'm just going to spit out some things that come to mind of/under all of them;
Earth care, Conservation:
People care, Social:
Fair share, personal: