Heidegger: antes do agir, é preciso aprender a pensar

"It is toward the great essence of man that we are thinking, inasmuch as man’s essence belongs to the essence of Being and is needed by Being to keep safe the coming to presence of Being into its truth.
Therefore, what is necessary above all is this: that beforehand we ponder the essence of Being as that which is worthy of thinking; that beforehand, in thinking this, we experience to what extent we are called upon first to trace a path for such experiencing and to prepare that path as a way into that which till now has been impassable.
All this we can do only it before considering the question that is seemingly always the most immediate one and the only urgent one, What shall we do? we ponder this: How must we think? For thinking is genuine activity, genuine taking a hand, if to take a hand means to lend a hand to the essence, the coming to presence, of Being. This means: to prepare (build) for the coming to presence of Being that abode in the midst of whatever is [inmitten des Seienden] into which Being brings itself and its essence to utterance in language. Language first gives to every purposeful deliberation its ways and its byways. Without language, there would be lacking to every doing every dimension in which it could bestir itself and be effective. In view of this, language is never primarily the expression of thinking, feeling, and willing. Language is the primal dimension within which man’s essence is first able to correspond at all to Being and its claim, and, in corresponding, to belong to Being. This primal corresponding, expressly carried out, is thinking. Through thinking, we first learn to dwell in the realm in which there comes to pass the restorative surmounting of the destining of Being, the surmounting of Enframing."
Heidegger, (GA7), Trad. William Lovitt, 1977, p. 40-41