In my view, a political vision is not a grab-bag of discrete problems and solutions. It is the visionary anticipation of a direction.

The supreme good of life is vitality. And vitality is always seeping away.

The Amazon is not just a set of trees. It is a set of 25 million people. If we don't create real economic opportunities for them, the practical result is to encourage disorganized economic activities that results in the further destruction of the rain forest.

When we imagine our Universe to be just one out of a multitude of possible worlds we devalue this world, the one we see, the one we should be trying to explain.

Social solidarity must rest instead on the sole secure basis it can have: direct responsibility of people for one another. Such responsibility can be realized through the principle that every able-bodied adult holds a position within the caring economy - the part of the economy in which people care for one another - as well as within the production system.

Insofar we are death-bound, existence is urgent and frightful. Insofar as are groundless, it is vertiginous and dreamlike. Insofar as we are insatiable, it is unquiet and tormented.

The scientist should treasure the riddles he can't solve, not explain them away at the outset.