In the present state of the world, it is evident that the control we have gained of physical energies, heat, light, electricity, etc., without having first secured control of our use of ourselves is a perilous affair. Without the control of our use of ourselves, our use of other things is blind; it may lead to anything.
The Later Works of John Dewey, 1925 - 1953: 1931-1932, Essays, Reviews, and Miscellany (ed. SIU Press, 2008) - ISBN: 9780809328161