A tool is usually more simple than a machine; it is generally used with the hand, whilst a machine is frequently moved by animal or steam power.Quote by Charles Babbage about tools
At each increase of knowledge, as well as on the contrivance of every new tool, human labour becomes abridged.Quote by Charles Babbage about tools
The difference between a tool and a machine is not capable of very precise distinction; nor is it necessary, in a popular explanation of those terms, to limit very strictly their acceptation.Quote by Charles Babbage about tools