Compare and Contrast Past and Present

The past and the present are two verb tenses that are very familiar and heavily used when describing something from our childhood, or our plans for when we grown up. The past is constant and the future is a variable. We can remember our past and dream about our futures. They are as different as water is to a cave, and yet they can be compared that they are both something of the unknown.
The past is a verb tense that expresses something that happened or was done in the past. It is used to express something that at one time existed, but now in the present time ceases to exist. Some aspects of the past are very clear and precise because they have been recorded. However at the same time there are secrets of the past that have yet to be discovered. Like water in a fish bowl, the longer it ages, the more it becomes murky, and skewed like a memory, the details have been forgotten, secrets lost to time. Similar to the ocean, the past hides ancient treasures, such as a ship wreck or the base of an iceberg, beneath its vast and deep realm. You can never take back the past, everything that in it is permanent, it cannot be changed. The past is our history; it becomes a part of us.
The future is a verb tense that describes something that has yet to happen, or is to be done in the future. It is used to express something that at some time may exist, but now in the present time does not exist. Nothing in the future is for certain, no one knows what will happen in the future, it has not yet been recorded. It is dark like a cave; you cannot shed light on the future until it is in the present, because it is opaque. It is empty, open for new possibilities. Everything in the future is a variable; it can be affected by the present. The future is our unwritten story, it has yet to become.
Humans are enraptured by both the past and the future because they are another world, a different time, something that we have personally never witnessed. It is the mystery of the past that reaches out its deathly fingers to grasp the inquisitive minds of detectives, archeologists, and genealogists. It is the unknown that lures the imaginations of writers, inventors, and scientists to the possibilities of the future. People want to know what is going to happen in the future so they can prevent the negatives from occurring, just as people believe it is important to understand the past to keep the negatives from repeating itself. The further we move into the future, the more we can add to our past, and the more we can discover from looking back on our history. The more people there are in the past for future generation to find inspiration. Both verb tenses are used to express something that presently does not exist.
The past and the present two verb tenses that describe time, one a time that has already been, the other that has yet to be. We take photos of the past and draw pictures of what could be the future. We make movies and plays with time settings in both past and future. One is both known and unknown, because it is like water, sometime it is clear other times it is cloudy. The other is a complete mystery, like a cave, residing in shadows. The past and the present have been able to entice the minds of humans for years and will continue to do so in the years to come.