The illegality of cannabis is outrageous, an impediment to full utilization of a drug which helps produce the serenity and insight, sensitivity and fellowship so desperately needed in this increasingly mad and dangerous world. - Carl Sagan
Engineering is an activity other than purely manual and physical work which brings about the utilization of the materials and laws of nature for the good of humanity. - R. E. Hellmund
Engineering is the professional and systematic application of science to the efficient utilization of natural resources to produce wealth. - T. J. Hoover and J. C. L. Fish