Belief in God in an Age of Science: John Polkinghorne, Part Three
The gift of Love must be the gift of freedom, the gift of a degree of letting-be, and this can be expected to be true of all creatures to the extent that is appropriate to their proper character. It is in the nature of dense snow fields that they will sometimes slip with the destructive force of an avalanche. It is the nature of lions that they will seek their prey. It is the nature of cells that they will mutate, sometimes producing new forms of life, sometimes grievous disabilities, sometimes cancers.