wherefore, a reason
由 centers on the idea of origin or cause: the reason why something happens or the source from which it comes. The meaning 'wherefore' is an older way of asking for that reason.
由 is thought to depict a sprout emerging from a field, symbolizing the origin or source of growth. This origin sense extended to mean reason or cause.
The vertical line poking up through the box looks like a sprout breaking through the soil. That sprout is the reason the plant exists—the origin of its growth.
For ユ, imagine asking 'Why?' and getting the answer 'You!'—the reason is you. You -> ユ, the reason behind it all.
reason; grounds; pretext; excuse; motive
freedom; liberty
going through; going via; going by way of
origin; source; history; derivation
reason; significance; cause
discomfort; inconvenience
Liberal Democratic Party; LDP
free; unrestricted; (with) complete mastery; completely in control
reason; cause; whys and wherefores; particulars
history; pedigree; lineage
Liberal Party
freestyle (e.g. swimming event)
acquaintance; relation; affinity; reason
grave; serious; alarming
an extremely great number (often said to be 100 million)
(for) any reason
Irish Free State (1922-1937)
ordoliberalism
Orange Free State (1854-1902)
Liberal Party of Canada