When I was a baby, my first words would have been indeed powerful to my mother, and any other onlooker who could wait that long for an utterance, however the more goo goo gaa gaa that has come out of this mouth, the less quality has come with it.
This is because it is not possible to maintain the power and quality of language in everything we say, as we say an awful lot in the course of a normal day. The more we say the less it has quality generally and this is the weakening effect of spoken language.
Luckily, there are some unlike me and my normal daily discourse who think deeply and who have generally taken the time to commit them into the form of written language which can deliver the correct words at the correct time. This is an empowering saving grace for language and one in which language can bask in magnificence for all time. The precipice I am working to is that language is powerful or weak depending on the form it is delivered in whether it is written or oral spontaneous or thought through, however it is always in combination with the brain and timing delivering it.
What if at the same time as I was going goo goo gaa gaa an enthusiastic relative decided to take a happy snap and profoundly encapsulate my soul for all time within the bounds of photographic paper? This image is a time point, a reference and a historic long lasting physical representation of my charming and aesthetically pleasing form. I digress. It is a powerful ability to encapsulate time, action and things like physics at play.
But what if my relative is a stooge with a camera and takes the image out of focus or represents me with double negatived with three eyes? It would not be a true representation of me rather would convey disinformation or distortion.
Being an Advertising student and eventually maybe a copywriter, you would expect me to say language hands down is the winner, yet I don’t with some reservation at this point. In global advertising an image can convey meaning globally yet locally have to be translated a hundred times to attempt to achieve the same meaning. Sometimes the copy can translate a better meaning for which there is no equivalent in other languages.
So in summation my answer to the question is language more powerful than images is whichever is effectively used through the timing, nature and significance of concepts being conveyed to convey a meaning.