It was said of Reb Simcha Bunem of Pershyscha that he carried two slips of paper. one in each pocket. On one he wrote: Bishvili nivra ha-olam "For my sake the world was created." On the other he wrote: "V'anokhi afar v'efer" "I am but dust and ashes." Reb Simcha would take out each slip of paper as necessary. as a reminder to himself.