The wisdom of one generation will be folly in the next.

The feeling of it to my lungs was not sensibly different from that of common air; but I fancied that my breast felt peculiarly light and easy for some time afterwards. Who can tell but that, in time, this pure air may become a fashionable article in luxury. Hitherto only two mice and myself have had the privilege of breathing it.

Every man, when he comes to be sensible of his natural rights, and to feel his own importance, will consider himself as fully equal to any other person whatever

But it is not given to every electrician to die in so glorious a manner as the justly envied Richmann.

The wisdom of one generation will be folly in the next.

How glorious, then, is the prospect, the reverse of all the past, which is now opening upon us, and upon the world. Government, we may now expect to see, not only in theory and in books but in actual practice, calculated for the general good, and taking no more upon it than the general good requires, leaving all men the enjoyment of as many of their natural rights as possible, and no more interfering with matters of religion, with men's notions concerning God, and a future state, than with philosophy, or medicine.

I have procured air [oxygen] ... between five and six times as good as the best common air that I have ever met with.