The mathematical is that evident aspect of things within which we are always already moving and according to which we experience them as things at all, and as such things. The mathematical is this fundamental position we take toward things by which we take up things as already given to us, and as they must and should be given. Therefore, the mathematical is the fundamental presupposition of the knowledge of things.

Thus "phenomenology" means αποφαινεσθαι τα φαινομενα -- to let that which shows itself be seen from itself in the very way in which it shows itself from itself.

Everyone is the other, and no one is himself. The they, which supplies the answer to the who of everyday Da-sein, is the nobody to whom every Da-sein has always already surrendered itself, in its being-among-one-another.

As the ego cogito, subjectivity is the consciousness that represents something, relates this representation back to itself, and so gathers with itself.

The world, in resting upon the earth, strives to surmount it. As self-opening it cannot endure anything closed. The earth, however, as sheltering and concealing, tends always to draw the world into itself and keep it there

So long as we represent technology as an instrument, we remain held fast in the will to master it.

Transcendence constitutes selfhood.