Time is not a thing, thus nothing which is, and yet it remains constant in its passing away without being something temporal like the beings in time.
Martin HeideggerThere is no such thing as an empty word, only one that is worn out yet remains full.
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