Telegraphs are machines for conveying information over extensive lines with great rapidity.

At each increase of knowledge, as well as on the contrivance of every new tool, human labour becomes abridged.

I have no desire to write my own biography, as long as I have strength and means to do better work.

I am inclined to attach some importance to the new system of manufacturing; and venture to throw it out with the hope of its receiving a full discussion among those who are most interestedin the subject.

Long intervals frequently elapse between the discovery of new principles in science and their practical application... Those intellectual qualifications, which give birth to new principles or to new methods, are of quite a different order from those which are necessary for their practical application.

In mathematics we have long since drawn the rein, and given over a hopeless race.

The half minute which we daily devote to the winding-up of our watches is an exertion of labour almost insensible; yet, by the aid of a few wheels, its effect is spread over the whole twenty-four hours.