"No, I don't autograph blank slips, checks, or stickers, and certainly no books without me in them"

In this quote, author Jack L. Chalker is expressing his refusal to sign blank slips, checks, sticker labels, and books that do not include him as a character. This could be interpreted as a statement of self-worth and a desire to just associate himself with works that straight include him. It might likewise be viewed as a rejection of the idea of signing something without any personal connection or meaning. Chalker's words recommend that he values his own presence and contribution in his work, and does not wish to be associated with anything that does not reflect that.