Where does what nourishes you also destroys you come from?

During some renovation work at Corpus Christi College, Cambridge, in 1953 a portrait was discovered of a young man of the age of 21 with the date of the painting 1585. The painting also bore the motto QUOD ME NUTRIT ME DESTRUIT (what nourished me also destroys me).

Subsequent scholarship showed that there were good grounds for supposing that the portrait was of Christopher Marlowe - William Shakespeare's only significant rival on the London stage until Marlowe's early, and highly suspicious, death in 1593 (aged 29).

In many ways Christopher Marlowe was The Rolling Stones to William Shakespeare's Beatles - and this portrait is the only image we have of him (if indeed it is Marlowe).

There are fairly similar mottos in earlier works, but this is the Wording Angelina Jolie chose for her tattoo.