Science can't define these things. they are all metaphysical. Basic Instructions Before Living Earth has your answer (BIBLE)

science is similar to a machine, it works logically by the rules we've defined them. for example if we want to study the meaning of relativity first of all we need to define some definitions and principles about it, as the history of the special relativity shows us we weren't able to justify phenomena in the high speed bodies and the electrodynamic equations until 1905 when albert einstein posed the paper "on the electrodynamics of moving bodies" and he gave us a good definition for "simultaneity", it was the start point of creating a logical theory about relativity. I told this story to tell you that we need to define some justifiable definitions if we want to study about mind, soul,love,peace and god and we don't have these definitions yet to start creating a science for them