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Jacopo Zabarella: The Last of the Renaissance Aristotelians and His Influence on Modern Science. Jacopo Zabarella. The Last of the Renaissance Aristotelians and His (Their?) Influence on Modern Science. John P. McCaskey Stanford University
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Jacopo Zabarella: The Last of the Renaissance Aristotelians and His Influence on Modern Science Jacopo Zabarella The Last of the Renaissance Aristotelians and His (Their?) Influence on Modern Science John P. McCaskey Stanford University Program in History and Philosophy of Science and Technology
1630 1620 1610 1600 1590 1580 1570 1560 1530 1550 1640 1540 Montaigne 1533 1580 1592 Zabarella 1532 1578 1589 Galileo 1564 1638 1642 Montaigne and Zabarella
Zabarella 1532 1589 Galileo 1564 1638 1642 School of Padua
Inductive Science Scholastic Aristotelianism 1500 1600 1700 1800 Comes Down to Induction
I Tatti Renaissance Library Harvard University Press I Tatti Renaissance Library
Method of Regressus Argue from effect to cause Planets are near. Argue from cause to effect Knowledge of the fact Knowledge of the reasoned fact Particulars to universal Universals to particulars Planets do not twinkle. À priori À posteriori Composition Resolution ? Induction Deduction Regressus: Its Two Parts
Method of Regressus Argue from effect to cause Planets are near. Argue from cause to effect Demonstratio quia Demonstratio ab effectu Demonstratio a signo Syllogismo a signo Demonstration of the second grade Demonstratio propter quid Demonstratio potissima Demonstration in the highest sense What does not twinkle is near. What is near does not twinkle. Planets do not twinkle. Planets do not twinkle. Planets are near. Therefore, planets are near. Therefore, planets do not twinkle. Regressus: Two Syllogisms
Induction Peter is biped. Socrates is biped. Plato is biped. Therefore, every man is biped. Peter, Socrates, Plato & any other man are biped. Peter, Socrates, Plato & any other man are biped. Peter, Socrates, Plato & any other man are men. All men are Peter, Socrates, Plato & any other man. Therefore, every man is biped. Therefore, all men are biped. “proprio lumine” Induction
Method of Regressus Argue from effect to cause Planets are near. Argue from cause to effect What does not twinkle is near. What is near does not twinkle. Planets do not twinkle. Planets do not twinkle. Planets are near. Therefore, planets are near. Therefore, planets do not twinkle. Regressus: Two Syllogisms, Three Insights
Everard Digby c. 1551–1605 1630 1620 1610 1600 1590 1580 1570 1560 1530 1550 1640 1540 Montaigne 1533 1580 1592 Zabarella 1532 1578 1589 Digby c.1551 1579 1605 Everard Digby of Cambridge
The One Cause Argue from effect to cause Argue from cause to effect Causes What is near does not twinkle. What does not twinkle is near. Effects Planets are near. Planets do not twinkle. Therefore, planets do not twinkle. Therefore, planets are near. Digby’s Ascent and Descent
All valid knowledge is • à priori • deductive • deduced from ideas that are • “clear,” • “known by a clear light,” • “known by their own light,” • “distinct” • justified by contemplative insight alone, without need for empirical grounding 1630 1620 1610 1600 1590 1580 1570 1560 1530 1550 1640 1540 “the almost mystical beginnings of knowledge” Zabarella 1578 1532 1589 1579 Digby c.1551 1605 Zabarella and Digby
1630 1620 1610 1600 1590 1580 1570 1560 1530 1550 1640 1540 Zabarella 1578 1532 1589 1579 Digby Descartes c.1551 1596 1605 1644 Descartes
Humanist Aristotelianism S “idol” Inductive Science Scholastic Aristotelianism Deductive Science Method of Regressus Method of Ascent & Descent 1500 1600 1700 1800 Concluding Integration