ct's the motto of davy crockett, us congressman from tennessee:et 'be sure you're right, then go. ahead.'ad. >> guest: right. t c-span: where'd you find that? >> guest: well, that -- again, that is -- that actually was iny my father's collection.me some of these came from dictionaries of quotations, somn of those mottoes.ie, that particular section you'ret. looking at was difficult not to assemble but to decide what toiw include in the book because i had limited space.ude in and i thought, well,it wastac inportant to include the mottoe, of the states.udd and i wanted to include some personal mottoes, mottoes of historical figures, that sort of thing, or organizationsa that people are familiar with. and i also wanted to try to try communicate some of the eclecticism of my father's original collection. i used to go through there andaf see this wide range of things, some of them quite humorous, others serious, others just -- just interesting because of the juxtapositions they created. th so in that particular section, h tried to do that,these justi -- these juxtapositions of personat