The proper function of man is to live, not to exist. I shall not waste my days in trying to prolong them. I shall use my time.
Jack LondonAnd not only did he learn by experience, but instincts long dead became alive again. The domesticated generations fell from him. In vague ways he remembered back to the youth of the breed, to the time the wild dogs ranged in packs through the primeval forest and killed their meat as they ran it down.
Jack London