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

This is unfortunately a world in which things find it difficult, frequently impossible, to live up to their names.

Will is nothing more than a particular case of the general doctrine of association of ideas, and therefore a perfectly mechanical thing.

What I have known with respect to myself, has tended much to lessen both my admiration, and my contempt, of others.

In completing one discovery we never fail to get an imperfect knowledge of others.

Orthodoxy, my Lord,: said Bishop Warburton, in a whisper, — orthodoxy is my doxy, — heterodoxy is another man's doxy.

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.