Elastic

The time which we have at our disposal every day is elastic; the passions that we feel expand it, those that we inspire contract it; and habit fills up what remains.

-- Valentin Louis Georges Eugène Marcel Proust (1871 - 1922), French novelist, essayist, and critic,  Remembrance of Things Past (1913-1927), Vol II: Within a Budding Grove (1919), Ch. I: "Madame Swann at Home"