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.
Martin HeideggerThere is no such thing as an empty word, only one that is worn out yet remains full.
Martin HeideggerThus "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.
Martin HeideggerThe 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.
Martin Heidegger