LIGHTMAN, Alan. Comments by Alan Lightman. AmeriQuests, [S.l.], v. 3, n. 2, may 2006. ISSN 1553-4316. Available at: <http://ameriquests.org/index.php/ameriquests/article/view/78>. Date accessed: 18 jan. 2020. doi: https://doi.org/10.15695/amqst.v3i2.78.