Natura Non Facit Saltum

It is, no doubt, extremely difficult to conjecture by what gradations many structures have been perfected... but we see so many strange gradations in nature, as is proclaimed by the canon, 'Natura non facit saltum,' that we ought to be extrememly cautious in saying that any organ or instinct, or any whole being, could not have arrived at its present state by many graduated steps.

∼ Charles Darwin ∼