three-brained mortals

• three-brained mortals

49:5.132. Brain-type se­ries. The one phys­i­cal uni­for­mity of mor­tals is the brain and ner­vous sys­tem; nev­er­the­less, there are three ba­sic or­ga­ni­za­tions of the brain mech­a­nism: the one-, the two-, and the three-brained types. Uran­tians are of the two-brained type, some­what more imag­i­na­tive, ad­ven­tur­ous, and phil­o­soph­i­cal than the one-brained mor­tals but some­what less spir­i­tual, eth­i­cal, and wor­ship­ful than the three-brained or­ders. These brain dif­fer­ences char­ac­ter­ize even the pre­hu­man an­i­mal ex­is­tences.

49:5.14From the two-hemi­sphere type of the Uran­tian cere­bral cor­tex you can, by anal­ogy, grasp some­thing of the one-brained type. The third brain of the three-brained or­ders is best con­ceived as an evolve­ment of your lower or rudi­men­tary form of brain, which is de­vel­oped to the point where it func­tions chiefly in con­trol of phys­i­cal ac­tiv­i­ties, leav­ing the two su­pe­rior brains free for higher en­gage­ments: one for in­tel­lec­tual func­tions and the other for the spir­i­tual-coun­ter­part­ing ac­tiv­i­ties of the Thought Ad­juster.

49:5.15While the ter­res­trial at­tain­ments of the one-brained races are slightly lim­ited in com­par­i­son with the two-brained or­ders, the older plan­ets of the three-brained group ex­hibit civ­i­liza­tions that would as­tound Uran­tians, and which would some­what shame yours by com­par­i­son. In me­chan­i­cal de­vel­op­ment and ma­te­rial civ­i­liza­tion, even in in­tel­lec­tual prog­ress, the two-brained mor­tal worlds are able to equal the three-brained spheres. But in the higher con­trol of mind and de­vel­op­ment of in­tel­lec­tual and spir­i­tual re­cip­ro­ca­tion, you are some­what in­fe­rior.

49:5.16All such com­par­a­tive es­ti­mates con­cern­ing the in­tel­lec­tual prog­ress or the spir­i­tual at­tain­ments of any world or group of worlds should in fair­ness rec­og­nize plan­e­tary age; much, very much, de­pends on age, the help of the bi­o­logic up­lifters, and the sub­se­quent mis­sions of the var­i­ous or­ders of the di­vine Sons.

49:5.17While the three-brained peo­ples are ca­pa­ble of a slightly higher plan­e­tary evo­lu­tion than ei­ther the one- or two-brained or­ders, all have the same type of life plasm and carry on plan­e­tary ac­tiv­i­ties in very sim­i­lar ways, much as do hu­man be­ings on Uran­tia. These three types of mor­tals are dis­tributed through­out the worlds of the lo­cal sys­tems. In the ma­jor­ity of cases plan­e­tary con­di­tions had very lit­tle to do with the de­ci­sions of the Life Car­ri­ers to project these var­ied or­ders of mor­tals on the dif­fer­ent worlds; it is a pre­rog­a­tive of the Life Car­ri­ers thus to plan and ex­e­cute.

49:5.18These three or­ders stand on an equal foot­ing in the as­cen­sion ca­reer. Each must tra­verse the same in­tel­lec­tual scale of de­vel­op­ment, and each must mas­ter the same spir­i­tual tests of pro­gres­sion. The sys­tem ad­min­is­tra­tion and the con­stel­la­tion over­con­trol of these dif­fer­ent worlds are uni­formly free from dis­crim­i­na­tion; even the regimes of the Plan­e­tary Princes are iden­ti­cal.