Though an atom is invisible, unthinkable, yet in it are the whole power and potency of the universe.

The atom cannot disobey the law. Whether it is the mental or the physical atom, it must obey the law. "What is the use of [external restraint]?"

Not one atom can rest until it finds its freedom.

Every atom is working and resisting every thought in the mind. Everything we see and know is but the resultant of these two forces.

Each atom is trying to fly off from its centre. In the internal world, each thought is trying to go beyond control. Again each particle in the external world is checked by another force, the centripetal, and drawn towards the centre. Similarly in the thought - world the controlling power is checking all these outgoing desires.