我日常生活的真正收获宛如晨曦或晚霞的色彩，难以捉摸，无法言传。我捕捉到的只是些微星辰，抓住的知识彩虹的一小段。——亨利·大卫·梭罗

The true harvest of my daily life is somewhat as intangible and indescribable as the tints of morning or evening. It is a little star dust caught, a segment of the rainbow which I have clutched. ——Henry David Thoreau (1817-1862)