Lucretius·-55 ADThe drops of rain that fall upon the stone in course of time will wear their way through it.
PlutarchPerseverance is more prevailing than violence; and many things which cannot be overcome when they are together, yield themselves up when taken little by little.
Lao TzuNothing in the world is as soft and yielding as water. Yet for dissolving the hard and inflexible, nothing can surpass it. The soft overcomes the hard; the gentle overcomes the rigid.
