The farthing was a British coin first
produced in the 13th century and last
used in 1960. The term "farthing" was
derived from fourthing, meaning one
fourth. Pennies were originally made
out of silver, and cut into halves or
fourths to provide change. A farthing
was worth one quarter of a penny.

Buy not what you want, but what you have need
of; what you do not want is dear at a farthing.
- Epistles (94) as quoted by Seneca

Can you by legislation add one farthing to the
wealth of the country? Of this House, you can add
one farthing to the wealth of the country...
- Richard Cobden

Are not two sparrows sold for a farthing? And one
of them shall not fall on the ground without your
Father.
- Matthew, 10:19

Virtue knows to a farthing what it has lost
by not having been vice.
- Horace Walpole