I should . . . prefer swallowing one incomprehensibility rather than two. It requires one effort only to admit the single incomprehensibility of matter endowed with thought, and two to believe, first that of an existence called spirit, of which we have neither evidence nor idea, and then secondly how that spirit, which has neither extension nor solidity, can put material organs into motion.
Thomas JeffersonPolitical dissension is doubtless a less evil than the lethargy of despotism: but still it is a great evil, and it would be as worthy the efforts of the patriot as of the philosopher, to exclude its influence if possible, from social life. The good are rare enough at best. There is no reason to subdivide them by artificial lines. But whether we shall ever be able so far to perfect the principles of society as that political opinions shall, in its intercourse, be as inoffensive as those of philosophy, mechanics, or any other, may well be doubted.
Thomas JeffersonI see,... and with the deepest affliction, the rapid strides with which the federal branch of our government is advancing towards the usurpation of all the rights reserved to the States, and the consolidation in itself of all powers, foreign and domestic; and that, too, by constructions which, if legitimate, leave no limits to their power... It is but too evident that the three ruling branches of [the Federal government] are in combination to strip their colleagues, the State authorities, of the powers reserved by them, and to exercise themselves all functions foreign and domestic.
Thomas Jefferson