Thus it appears that, while this germ of progress is innate in every human society, certain conditions are more favorable to its development than others,--conditions which act as stimulants or impediments to progress. Often we see nations remain apparently stationary, the elements of progress evenly balanced by opposing influences, and thus they remain until by internal force, or external pressure, their system expands or explodes, until they absorb or are absorbed by antagonistic elements. The intrinsic force of the body social appears to demand extrinsic prompting before it will manifest itself. Like the grains of wheat in the hand of Belzoni's mummy, which held life slumbering for three thousand years, and awoke to growth when buried in the ground, so the element of human progress lies dormant until planted in a congenial soil and surrounded by those influences which provoke development. This stimulant, which acts upon and unfolds the intellect, can be administered only through the medium of the senses. Nerve force, which precedes intellectual force, is supplied by the body; the cravings of man's corporeal nature, therefore, must be quieted before the mind can fix itself on higher things. The first step toward teaching a savage is to feed him; the stomach satisfied he will listen to instruction, not before. Cultivation of at least the most necessary of the industrial arts invariably precedes cultivation of the fine arts; the intellect must be implanted in a satisfied body before it will take root and grow. The mind must be allowed some respite from its attendance on the body, before culture can commence; it must abandon its state of servitude, and become master; in other words, leisure is an essential of culture. As association is the primal condition of progress, let us see how nature throws societies together or holds them asunder. In some directions there are greater facilities for intercommunication (another essential of improvement) than in other directions. Wherever man is most in harmony with nature, there he progresses most rapidly; wherever nature offers the greatest advantages, such as a sea that invites to commerce, an elevated plateau lifting its occupants above the malaria of a tropical lowland, a sheltering mountain range that wards off inclement winds and bars out hostile neighbors, there culture flourishes best. * * * * * [Sidenote: OBJECTIVE AND SUBJECTIVE STIMULANTS.]