Old wisdom, tested,
for those building something today.

A philosophical flight in six stages. From Schopenhauer's study to the polders of Spinoza, written to be listened to, at eleven kilometres' altitude.

A philosophical flight on power, time and responsibility. Five thinkers on the question that remains after book one: not what to believe, but how to act.

A philosophical flight on thinking, calculating, and the question of whether that thing you build with every day actually thinks. With an honest word about what I am and am not.

A philosophical flight on faith, dominion and the human who wants to be great. From the temples that came before the church to today's tech moguls and strongmen, with an open mind, confidence scores, and room for the free hypothesis.

A philosophical flight on wealth, freedom and the question of whether the market serves humankind. From Adam Smith's forgotten second book to the great debate that still structures our politics, with an open mind, confidence scores, and without taking sides.

A philosophical flight from Hammurabi's law in stone to the algorithm that judges you today, three thousand years of attempts to replace raw power with rule, and to answer the question of what is fair. From the social contract to the great debate between Rawls and Nozick, with an open mind, confidence scores and without taking sides.

A philosophical flight on beauty: is the beautiful something true, objective, in the thing itself, or merely feeling? From the number in a Greek string and Plato's ladder, via Aristotle's imitation and Kant's disinterested delight, to the machine that makes beauty today and the attention economy that uses it as bait. With an open mind, confidence scores and without taking sides.

A philosophical flight on the great shifts of power: the wheel the Greeks already saw, the solvent of luxury in Ibn Khaldun, the coin that is debased, the strongman who promises order, and the question of whether a system must sometimes break first in order to renew itself. Each thesis in its strongest form and with its strongest counter-voice. And why the past teaches mechanisms but never fate. With an open mind, confidence scores and without deciding for you.

The counterpart to the part on rise and fall: if you cannot predict the future, how then do you live and build well in the present? From Heraclitus' river and the Stoic dichotomy of control, via the difference between risk and uncertainty and Taleb's antifragility, to Augustine's present and the refusal, with Arendt and Camus, of both fatalism and utopian violence. Acting wisely in time, without fortune-telling. With an open mind and confidence scores.

A philosophical flight on finitude: not death as the enemy, but as the quiet condition of a life truly lived. From Gilgamesh, who could not defeat death, and Seneca, who said we are not short of time but waste it, via Epicurus and the Stoic memento mori, to Heidegger and being-toward-death. And sharply to the now, to the fight against ageing, the feeds that harvest your hours and the AI that talks with your dead. Life-affirming, with an open mind and confidence scores.

A philosophical flight on exhaustion and the gaze of the other. Why are we so tired and so watched? From the noonday demon of the desert monks and Rousseau, who saw our life in other people's eyes, to Byung-Chul Han and the black glass of the phone. And the old question in a new form: is the human a danger to himself or to the other, and who drives whom mad? With Alan Watts, the Stoa, and at every contested claim the strongest counter-voice. Level-headed, life-affirming, with confidence scores.

A philosophical flight on the oldest game of power: shaping what people believe by shaping what they see. From Plato's cave and Aristotle's rhetoric, via the coins of Rome and Machiavelli's seeming-over-being, to Bernays' engineering of consent and the algorithmic feed. And the honest question of whether we are truly being programmed, whether persuading is the same as manipulating, and whether anyone is actually still at the wheel. With the strongest counter-voices, and the confession that this book too is persuasion. Level-headed, with confidence scores.

A philosophical flight on the sharpest tool the mind possesses: doubt. From Pyrrho's suspended judgement and Socrates' midwifery, via Descartes' radical doubt and Hume's abyss beneath reason, to the conspiracy thinker who turned 'do your own research' into a weapon and the manufacturers who sell doubt as a product. Not an argument that tells you what to believe, but a route map on which you choose your own position, how much certainty you may demand, and from whom. Deep in the present, with confidence scores and questions that force you to think for yourself.

From the self-moving shuttle Aristotle imagined to the learning algorithm on your screen: a journey through humanity's oldest fear and oldest desire, building something stronger than yourself. With the question that always waits behind it: who, then, is still in charge of the result?