Focus, our word in English for the concentrated attention, the interest that warms to life all that comes within its radius, originates as the Latin word for hearth. And hearth was Hestia.
Hillman argues that the hearth is the psychological ground of focused, attentive consciousness, identifying it directly with Hestia and tracing the English word 'focus' to the Latin term for the domestic fire.
, Mythic Figures, 2007thesis