The cambridge platonists exemplify the fear that newtonian natural philosophy subverts the status of traditional moral and religious beliefs, Which are strongly supported by the innate idea doctrine since it justifies them independently of the senses and the material universe. Isaac barrow, Friend and teacher of newton, Also employs the doctrine approbatively to support his metaphysics as a science of basic principles that constitute the foundation of natural science. Locke's rejection of the doctrine is analyzed and it is suggested that (...) the platonist's treatment of the active role of the mind in sensation could have been developed in eighteenth century britain if locke's polemic had not been so successful. (shrink)