Such, then, are those who, in due regard both to the essential differences of character, and to the proprieties of language, should be termed Enthusiasts. To apply an epithet which carries with it an idea of folly, of weakness, and of extravagance, to a vigorous mind, efficiently as well as ardently engaged in the pursuit of any substantial and important object, is not merely to misuse a word, but to introduce confusion among our notions, and to put contempt upon what is deserving of respect. Where there is no error of imagination, no misjudging of realities, no calculation which reason condemns, there is no enthusiasm, even though the soul may be on fire with the velocity of its movement in pursuit of its chosen object. If once we abandon this distinction, language will want a term for a well-known and very common vice of the mind; and, from a wasteful perversion of phrases, we must be reduced to speak of qualities most noble and most infirm by the very same designation. If the objects which excite the ardor of the mind are substantial, and if the mode of pursuit be truly conducive to their attainment; if, in a word, all be real and genuine, then it is not one degree more, or even many degrees more, of intensity of feeling that can alter the character of the emotion. Enthusiasm is not a term of _measurement_, but of _quality_. When it is said that enthusiasm is the fault of infirm constitutions, a seeming exception must be made in behalf of a few high-tempered spirits, distinguished by their indefatigable energy, and destined to achieve arduous and hazardous enterprises. That such spirits often exhibit the characters of enthusiasm cannot be denied; for the imagination spurns restraint, and rejects all the sober measurements and calculations of reason, whenever its chosen object is in view; and a tinge, often more than a tinge, of extravagance belongs to every word and action. And yet the exception is only apparent; for although these giants of human nature greatly surpass other men in force of mind, courage, and activity, still the heroic extravagance, and the irregular and ungovernable power which enables them to dare and to do so much, is, in fact, nothing more than a partial accumulation of strength, necessary because the utmost energies of human nature are so small, that, if equally distributed through the system, they would be inadequate to arduous labors. The very same task, which the human hero achieves in the fury and fever of a half-mad enthusiasm, would be performed by a seraph in the perfect serenity of reason. Although, therefore, these vigorous minds are strong when placed in comparison with others, their enthusiasm is in itself a weakness;—a weakness of the species, if not of the individual. * * * * *