The contradictory experiments of chemists leave us at liberty to conclude what we please. My conclusion is, that art has not yet invented sufficient aids to enable such subtle bodies [air, light, &c.] to make a well-defined impression on organs as blunt as ours; that it is laudable to encourage investigation but to hold back conclusion.

I do not take a single newspaper, nor read one a month, and I feel myself infinitely the happier for it.

Governments constantly choose between telling lies and fighting wars, with the end result always being the same. One will always lead to the other.

Our country is now taking so steady a course as to show by what road it will pass to destruction, to wit: by consolidation of power first, and then corruption, its necessary consequence.

Being myself a warm zealot for the attainment & enjoiment by all mankind of as much liberty as each may exercise without injury to the equal liberty of his fellow citizens, I have lamented that in France the endeavors to obtain this should have been attended with the effusion of so much blood.

Most men die at age 25, but aren't buried until 70.

The movements of nature are in a never ending circle. The animal species which has once been put into a train of motion, is still probably moving in that train. For if one link in nature's chain might be lost, another and another might be lost, till this whole system of things should evanish by piece-meal; a conclusion not warranted by the local disappearance of one or two species of animals, and opposed by the thousands and thousands of instances of the renovating power constantly exercised by nature for the reproduction of all her subjects, animal, vegetable, and mineral.