Thou shalt love thy neighbour as thyself.
Gist of Idea
Thou shalt love thy neighbour as thyself
Anon (Lev) (03: Book of Leviticus [c.700 BCE], 19.18)
Most Christians think Jesus originated this thought. Interestingly, this precedes Socrates, who taught a similar idea.
'The Bible', ed/tr. the Church [Collins 1950], p.64