We may apply our intelligence to manufacture an automobile, radio or television for sense gratification, but we have to understand that this is not knowledge. Rather, this is plundered intelligence. Intelligence was given to man to understand the problems of life, but it is being misused. People are thinking that they have acquired knowledge because they know how to manufacture and drive cars, but before the car was here people were still going from one place to another. It is just that the facility has been increased, but along with this facility come additional problems — air pollution and over-crowded highways. This is maya; we are creating facilities, but these facilities in their turn are creating so many problems. Instead of wasting our energy to supply ourselves with so many facilities and modern amenities, we should apply intelligence to understand who and what we are.
Srila Prabhupada, in On The Way To Krishna ch. 4: The Roads of the Foolish and the Wise