Joseph Smith asserts that he did not build upon another's foundation, but on his own independent revelation and truth, confident in God's support.
Joseph Smith, Jr., Words of Joseph Smith: The Contemporary Accounts of the Nauvoo Discourses of the Prophet Joseph, ed. Andrew F. Ehat and Lyndon W. Cook (Provo, UT: BYU Religious Studies Center, 1980), 382
God always sent a new dispensatn. into the world—when men come out & build upon o[the]r men's foundatn.—did I build on anotr. mans foundtn. but my own—I have got all the truth & an indepent. rev[elatio]n. in the bargain— & God will bear me off triumphant