“Relations of ideas are unbreakable bonds created between ideas and all logically true statements and matters of fact concern experience and we are certain of things of fact through cause and effect” (Hume Section IV). This proves that both mind and body are one due to cause and effect. He believes that there are connections between all ideas in the mind and that there are three different types of them. The first is similarity which describes looking at an image and then thinking about what it represents in the image. Then there is contiguity by looking at something and then thinking about something different. Then there is the cause and effect of something happening to you and then imagining the pain of the injury. Starting to be able to look at something again and then create an idea about it just shows that without the senses we couldn't suddenly have an idea. Descartes underlines well the fact of not trusting our senses. Why, because how do we really know if it's real or not, or if we're dreaming or if it's an illusion, and/or if it's an evil demon trying to cure us. This is why Descartes divides the mind from the body because the only thing we can trust is our mind. If we think something, then it is our thoughts that create that idea, so it is our act that is not deceived by anyone or any evil demon. The mind is the only one