From Tesla’s autobiography

doc icon MyInventionsTheAutobiographyOfNikolaTesla.docx
“The progressive development of man is vitally dependent on invention. It
is the most important product of his creative brain. Its ultimate purpose
is the complete mastery of mind over the material world, the harnessing of
the forces of nature to human needs. This is the difficult task of the
inventor who is often misunderstood and unrewarded.”