Hamlet

a tragedy by William Shakespeare (1564-1616), English poet and dramatist of the Elizabethan period. The play is about a young prince who avenges the murder of his father. Act 1, Scene 3, as quoted by LRH, has the following passage in it:

And borrowing dulls the edge of husbandry. This above all: to thine own self be true, And it must follow, as the night the day, Thou canst not then be false to any man."