“Water is fluid, soft, and yielding. But water will wear away rock, which is rigid and cannot yield.” These are the words of Laozi (also known as Lao Tse), the ancient Chinese philosopher and the founder of Taoism. In his writing, the quote serves as a metaphor for how something, or someone, can be strong even in its softness.
Of course, we are not here to discuss Taoism. Laozi derived his beautiful metaphor from something very real: the ability of water to enter cracks, expand, and destroy rock surfaces. For homeowners, this natural phenomenon is a potential problem that could ruin their concrete surfaces, or surfaces made from similarly hard materials.