On Drawing: Kimon Nicolaides
Here's a great quote from the introduction to Kimon Nicolaides's famous instructional book, The Natural Way to Draw:
'There is a vast difference between drawing and making drawings. The things you will do - over and over again - are but practice. They should represent to you only the result of an effort to study, the by-product of your mental and physical activity. Your progress is charted, not on paper, but in the increased knowledge with which you look at life around you.'