No angelo. Words and materials don't cause magick.
Words created by the human mind relate to the human minds using them. Communication is very important to our psychology and between speech and visual it is how we process information. So we use words and visualization to facilitate our own mind's processes to convince ourselves that we are actually doing something and to define exactly what that something is.
How does this help us? Well, the power of mind over matter is scientifically proven, the placebo effect for example. But in order to perform mind over matter one must truly believe and/or be extremely determined and confidant in success. Some people walk over hot coals and are not burned to prove how strong there ability of mind over matter is. When we believe, we have confidance, and high confidance directly relates to strong willpower. Willpower, belief and focus is all that is needed in order to practice magick--in short, the mind.
Sometimes, in order to make something happen, our mind must conclude that there must be a physical cause (enter sympathetic magick). This is why we use ritual.