Everything we know and talk about is relative to our condition of being-in-the-world. Things can only make sense from the position of this fact. Without the world, there is no existence. This is the absolute basis of all the necessary respect that we must have for the world.
Life perceives, or, instinctively knows that it is immersed in an environment. Reality is that which is revealed. On the primary level, it is that which is revealed to the senses, and on a superior level, it is that which is unconcealed to the mind, or discovered by it.
Language permits reality to be an assertion, and it also permits others, who share the same language, to interpret – confirm or dispute – the assertions. A picture of what is true in the world comes through the confirmation or rejections of interpretations of what is perceived through the senses or through the intellect.