State of mind-never stop The old saying goes: "You don't know the height of the sky unless you climb a mountain, or the depth of the earth if you are near a deep stream." In my opinion, this sentence is not only describing the height of the sky and the thickness of the earth, but also reminding us that there are people outside the world, so we should keep a modest attitude and never stop! Don't be a frog in the well! As we all know, everything is not absolute, that is to say, everything has objective relativity! When we are satisfied with the status quo and think that we have achieved our goal, we are at the top of the world! But in fact, it is far from reaching that peak! Just as "you don't know the height of the sky unless you climb the mountain, and you don't know the depth of the ground unless you are near the deep stream." When we think we know how high the sky is when we stand on the flat ground, as long as you climb a high mountain, we will know that our conclusion on the ground is wrong! When we think we already know how thick the ground is on the ground, as long as you dive into a deeper stream (water), you will understand that our judgment on how thick the ground is is incorrect! In fact, the contrast of things can be divided into horizontal contrast and vertical contrast, just as we judge the height of the sky and the thickness of the earth only on the ground, which is horizontal contrast; And when we climb mountains and wade to compare the previous judgments, this is vertical comparison! We don't comment that horizontal comparison must be correct, and we don't comment that vertical comparison must be wrong! Because the comparison result between them is the most important for us, which makes us understand a truth: that is, to spend energy on endless exploration and pursuit, instead of wasting it on unnecessary comparison! "If you don't climb mountains, you don't know the height of the sky, you don't face deep streams, and you don't know the thickness of the earth." I think the most appropriate one should be as our warning! Always remind yourself not to abandon, not to give up, not to be proud, not to be complacent! Only in this way can we climb higher mountains, dive deeper streams and seek results closer to objective facts! Explore every unknown field and find out the truth that belongs to this field! Due to my lack of knowledge, I can only provide such a thoughtful article for reference only!