"In the physical world, a number of difference forces are at
play, and each in turn displays supremacy, or at least relevance,
at subatomic, atomic, molecular, and wider levels.
"The weak force allows quarks to change form, and enables, among
other things, nuclear fusion inside the sun; the strong force binds
the nuclei inside atoms together, and the electromagnetic force
glues atoms and molecules together. Gravity is the weakest of the
forces in some terms, but it warps space and tells matter how to
move throughout it..."