For a scientific theory of him to be possible, man, including his habits of valuation, has to be taken as determined by causal laws, as an instance and part of nature.

Modern theory is about objects lower than man; even stars, being common things, are lower than man.

That nature does not care, one way or the other, is the true abyss. That only man cares, in his finitude facing nothing but death, alone with his contingency and the objective meaninglessness of his projecting meanings, is a truly unprecedented situation.

Blind nature will nearly always select the most probable, but man can let the most improbable become actual.

Responsibility has become the fundamental imperative in modern civilization, and it should be an unavoidable criterion to assess and evaluate human actions, including, in a special way, development activities.

Never must the existence or the essence of man as a whole be made a stake in the hazards of action.