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The gunas affect every part of our natural being. They have indeed their strongest relative hold in the three different members of it, mind, life and body. Tamas, the principle of inertia, is strongest in material nature and in our physical being. The action of this principle is of two kinds, inertia of force and inertia of knowledge… The principle of Rajas has its strongest hold on the vital nature. It is the Life within us that is the strongest kinetic motor power, but the life-power in earthly beings is possessed by the force of desire, therefore Rajas turns always to action and desire; desire is the strongest human and animal initiator of most kinesis and action, predominant to such an extent that many consider it the father of all action and even the originator of our being… The being. …The principle of Sattwa has its strongest hold in the mind; not so much in the lower parts of the mind which are dominated by the rajasic life-power, but mostly in the intelligence and the will of the reason. Intelligence, reason, rational will are moved by the nature of their predominant principle towards a constant effort of assimilation, assimilation by knowledge, assimilation by a power of understanding will, a constant effort towards equilibrium, some stability, rule, harmony of the conflicting elements of natural happening and experience. <ref>https://incarnateword.in/sabcl/21/the-liberation-of-the-nature#p3</ref>