A watch can only tell us how much time it is, how much time has passed, or how much time must still pass before something will occur. These statements are related not to time itself but only to its measurement or calculation.

The borders of my bodyhood coincide with those of my openness to the world. They are in fact at any given time identical, though they are always changing with the fluid expansion and contraction of my relationships to the world.

Death is an unsurpassable limit of human existence... We discover the relationship which is the basis for all feelings of reverence, fear, awe, wonder, sorrow, and deference in the face of something greater and more powerful... Only such a being-unto-death can guarantee the precondition that the Da-sein be able to free itself from its absorption in, its submission and surrender of itself to the things and relationships of everyday living and to return to itself.

A watch can only tell us how much time it is, how much time has passed, or how much time must still pass before something will occur. These statements are related not to time itself but only to its measurement or calculation.

If man did not exist as a world-spanning receptive realm of perception, if he were not engaged in this capacity, nothing at all could exist. 'Being,' in its traditional usage, means 'presence' and 'persistence.' To achieve presence, and thereby being, an entity requires some sort of open realm in which presence and persistence can take place. Thus an open realm of perception like that of human existence is the one being that makes being possible.

We declare that only man exists. This is not to say that material, inorganic nature and nonhuman beings-animals and plants-are in any sense unreal, insubstantial, or illusory because they do not so exist. We merely state that the reality of these nonhuman realms differs from that of human existence, whose primary characteristic is Da-sein (literally being-the-there)... Man as man is present... in a manner wholly different from... inanimate things.

The prevailing attunement is at any given time the condition of our openness for perceiving and dealing with what we encounter; the pitch at which our existence is vibrating. What we call moods, feelings, affects, emotions, and states are the concrete modes in which the possibilities for being open are fulfilled. They are at the same time the modes in which this perceptive openness can be narrowed, distorted, or closed off.