— Emanuel Lasker
Origine: The Chess Player's Chronicle (January 1878), vol. 2, no. 13, page 31 https://books.google.com/books?id=xjACAAAAYAAJ&pg=PA31#v=onepage&q&f=false: Annotation by William Wayte (1829-1898): "Still flying at high game, in accordance with the rule, "When you see a good move look out for a better." "
Origine: "[I]t is necessary always to bear in mind these prudential rules, viz.: having a good move, to seek for a better." Dominico Ercole del Rio, <i>The Incomparable Game of Chess</i>, trans. J.S. Bingham (London 1820), 35-36. Note Bingham incorrectly credits Ercole del Rio with work that was authored by Domenico Lorenzo Ponziani