The first was the English philosopher John Locke. He was born between 1632 and 1704, and his main work was Essay concerning human understanding, published in 1690. In his book, he tries to clarify two questions: First, where does our concept come from? Second Can we rely on the experience of the senses? "Interesting." Let's talk about one problem at a time. Locke declared that all our thoughts and ideas reflect what we have seen and heard. Before we have seen or heard anything, our mind is like a tabularasa, which means "blank board." "Please don't speak Latin any more." Locke believes that before our senses perceive anything, our minds are as blank as the blackboard before the teacher enters the classroom. He also likened our hearts at this time to a room without furniture. But then we begin to experience things. We see the world around us. We smell, taste, touch, and hear things. Among them, babies are the most sensitive. This is what Locke called the concept of a single sense. However, in addition to passively receiving the impressions of the outside world, our mind also actively carries out certain activities. It deals with the various single sensory concepts it has obtained by thinking, reasoning,Artificial Marble Slabs, believing and doubting, thus producing what Locke called "reflection". Therefore, he believes that sensation is different from thinking. Our mind is not only a passive receiver, but also classifies and processes all the incoming sensations. And these are the areas where we need to be careful. "Be careful?" "Locke emphasizes that the only things we can perceive are those'single senses'.". For example, when I eat an apple, I can't feel the appearance and taste of the whole apple at one time. In fact,pietra gray marble, what I received was a series of single sensations, such as it was green, it smelled fresh, and it tasted crisp and juicy. It was not until I had eaten many mouthfuls that I could say, "I am eating an apple.". What Locke means is that we have formed a "compound concept" about "apples". When we were babies and tasted apples for the first time, we didn't have this complex concept. We just saw a green thing that tasted fresh and juicy and delicious. And a little sour. In this way, we put together many similar feelings bit by bit to form the concepts of "apple", "pear" or "orange". But fundamentally, all the material that allows us to understand the world comes from the senses. Knowledge that cannot be traced back to a single sense is false knowledge, and we should not accept it. "In any case, Slate Wall Panel ,Grey Marble Slab, I am sure that these things are just like what we see, hear, smell and taste." You can say yes or no. With that in mind, let's talk about the second question that Locke tried to answer. He has just answered the question, 'Where does our concept come from?'. Now his question is: 'Is the world really as we perceive it?' The answer is not obvious. So, Sophie, let's not jump to conclusions. A true philosopher would never jump to conclusions. "I didn't say a word!" "Locke divided the nature of the senses into'primary 'and'secondary'.". In this respect, he admitted that he was influenced by great philosophers such as Descartes. The so-called "main nature" refers to the characteristics of the extended world, such as weight, movement and quantity. When we are talking about such qualities, we can be sure that our senses have reproduced them objectively. But things have other qualities, such as sour or sweet, green or red, hot or cold. Locke called them'secondary qualities. '. Sensations such as color, smell, taste and sound can not really reflect the inherent nature of things themselves, but only reflect the role of external entities in our senses. "In other words, everyone has his own taste." There is nothing wrong with it. Everyone will agree on the nature of size, weight, and so on, because these properties exist within the thing itself. But secondary properties such as color and taste may vary from person to person and from animal to animal, depending on the nature of each person's feelings. When Joanne ate the tangerine, she had the same expression on her face as when someone else ate a lemon. She can't eat more than one piece at a time. She says the tangerine is very sour. But the same tangerine, I often feel very sweet and delicious. Neither of you is right or wrong. You're just describing the effect of tangerine on your senses. We feel the same way about color. You may not like a certain shade of red, but if Joanne buys a dress in that color, you'd better not criticize it. Your experience of color is different from others, but color itself is not beautiful or ugly. "But everyone will say that tangerines are round." Yes, if the tangerine in front of you is round, you don't think it's square. Weighing will 'think' it is sweet or sour, but if it weighs only two hundred grams, you won't 'think' it weighs eight kilograms. Of course you can 'believe' that it weighs a few kilos, but if so, you must be a complete dork. If you ask several people to guess the weight of something at the same time, there must be one person whose answer is closer. The same applies to numbers. The number of peas in the jar is either nine, eight,white marble mosaic, six or not, and the same is true of the action. A car is either moving or at rest. "I understand." "So when it comes to'extended 'entities, Locke agrees with Descartes that there are some properties that can be understood by human reason." "It should not be too difficult to reach a consensus in this regard." forustone.com