So much of our early gladness vanishes utterly from our memory: we can never recall the joy with which we laid our heads on our mother's bosom or rode on our father's back in childhood; doubtless that joy is wrought up into our nature, as the sunlight of long-past mornings is wrought up in the soft mellowness of the apricot; but it is gone forever from our imagination, and we can only believe in the joy of childhood.