A purpose in the Heart

Dan. 1:8 "But Daniel purposed in his heart that he would not defile himself with the portion of the king’s meat, nor with the wine which he drank: therefore he requested of the prince of the eunuchs that he might not defile himself."


"Read the book of Daniel. Call up, point by point, the history of the kingdoms there represented... Read, and understand how poor, how frail, how short lived, how erring, how guilty is man <in lifting up his soul unto vanity.>" Lt57-1896.5

Can not fine the reference Lt57-1896.5
Could it be ctr.335.6?