The brick walls are not there to keep us out. The brick walls are there to give us a chance to show how badly we want something. Because the brick walls are there to stop the people who don’t want it badly enough.
Randolph Frederick Pausch (October 23, 1960 – July 25, 2008) was an American educator, a professor of computer science, human–computer interaction, and design at Carnegie Mellon University (CMU) in Pittsburgh, Pennsylvania.