Phenomenology of Spirit, Preface, paragraph 56

In this nature of that which is – in its being, to be its concept – is what comprises logical necessity generally. This alone is what is rational, the rhythm of the organic whole: it is as much knowledge of content as that content is concept and essence. In other words, this alone is the speculative. The concrete shape, put in motion by itself, makes itself into simple determinateness; thereby it raises itself to logical form, and is in its essentiality; its concrete existence is merely this movement, and is immediate logical existence. It is therefore needless externally to inflict formalism upon the concrete content; the latter is in its very nature a transition into the former, which, however, ceases to be external formalism, the form being the indwelling becoming of the concrete content itself.