prise; and, by consequence, to retard the improvement of science. They have annexed to every species of knowledge some chimerical character of terror and inhibition, which they transmit, without much reflection, from one to another; they first fright themselves, and then propagate the panick to their scholars and acquaintance. One study is inconsistent with a lively imagination, another with a solid judgment; one is improper in the early parts of life, another requires so much time, that it is not to be attempted at an advanced age; one is dry and contracts the sentiments, another is diffuse and overburdens the memory; one is insufferable to taste and delicacy, and another wears out life in the study of words, and is useless to a wise man, who desires only the knowledge of things.
But of all the bugbears by which the Infantes barbati, boys both young and old, have been hitherto frighted from digressing into new tracts of learning, none has been more mischievously efficacious than an opinion that every kind of knowledge requires a peculiar genius, or mental constitution, framed for the reception of some ideas, and the exclusion of others; and that to him whose genius is not adapted to the study which he prosecutes, all labour shall be vain and fruitless, vain as an endeavour to mingle oil and water, or in the language of chemistry to amalgamate bodies of heterogeneous principles.
This opinion we may reasonably suspect to have been propagated, by vanity, beyond the truth. It is natural for those who have raised a reputation by any science, to exalt themselves as endowed by heaven with peculiar powers, or marked out by an extraordinary designation for their profession; and to fright competitors away by representing the dif-
