Adam Steuart (Stuart, Stewart) (1591–1654) was a Scottish philosopher and controversialist.
[3] The Second Part of the Duply to M. S. alias Two Brethren addressed the issue of religious tolerance, which he classed with depravity.
[5] Steuart is mentioned (as A. S.) in John Milton's poem On the New Forcers of Conscience under the Long Parliament, a caudate sonnet, along with Samuel Rutherford and Thomas Edwards (and, implicitly, Robert Baillie).
[10] In what is now known as the Leiden Crisis,[11][12] coming to a head in 1647, he opposed Adriaan Heereboord, over whom he had been brought in, and presided at a rowdy debate with the Leiden Cartesian Johannes de Raey.
[13] Steuart's party, the proponents of continuing to teach along the lines of Aristotelian philosophy, won a temporary victory.