Man is a tool-using animal. Without tools he is nothing, with tools he is all.
Thomas Carlyle (1795-1881) British historian and essayist.
A worker may be the hammer's master, but the hammer still prevails. A tool knows exactly how it is meant to be handled, while the user of the tool can only have an approximate idea.
Milan Kundera (1929-?) Czech writer.
But lo! men have become the tools of their tools.
Henry David Thoreau (1817-1862) American naturalist, poet and philosopher.
O God, thy sea is so great, and my boat is so small.
A tool is but the extension of a man's hand, and a machine is but a complex tool. And he that invents a machine augments the power of a man and the well-being of mankind.
Henry Ward Beecher (1813-1887) American politician.