Nietzsche believed that philosophers tend to prioritize either truthfulness (the drive for objectivity and honesty in seeking knowledge) or originality (the desire to create new ideas and interpretations) in their work. These idiosyncrasies can shape their philosophical approach and style.
Many people point to Kierkegaard and Nietzsche as the two most prominent philosophers of existentialism. My first answer was incorrect. I was thinking about existentialist philosophers. To correct this I propose that Aristotle and Plato are two of the most prominent philosophers.
Two famous Greek philosophers are Socrates, known for his method of questioning to stimulate critical thinking and Plato, who was his student and known for his theories on ethics, justice, and politics.
Two Enlightenment philosophers were Voltaire, known for advocating for freedom of speech and religious tolerance, and John Locke, known for his ideas on natural rights and the social contract theory.
Karl Marx and Friedrich Engels are two of the most famous materialist philosophers known for their contributions to the theory of dialectical materialism.
Philosophers like Jean-Paul Sartre and Friedrich Nietzsche offer very different takes on the idea of existentialism. Ultimately, the different types of existentialism rest on the unified idea of examining human existence.
Many people point to Kierkegaard and Nietzsche as the two most prominent philosophers of existentialism. My first answer was incorrect. I was thinking about existentialist philosophers. To correct this I propose that Aristotle and Plato are two of the most prominent philosophers.
I am not sure what esitnetialism is (or was) but Viktor Frankl was not the father of existentialism. Kierkegaard and Nietzsche are now thought to have been the first two influential existentialist philosophers.
Leonardo da vinci Leonardo Da Vinci is not usually mentioned as a philosopher. There are many very controversial philosophers since it is the job of philosophers to shake things up. Two big ones are Karl Marx and Friedrich Nietzsche.
Theoretical (Theory) and Empirical (Data)
There have been so many important philosophers and schools of philosophers over 2,500 years of philosophy that it is difficult to single out just two philosophers. The two greatest Greek philosophers were Plato and Aristotle. In the Middle Ages there were St Augustine and St Thomas of Aquinas. In the Renaissance there were Erasmus, Montaigne, Machiavelli and Thomas Moore. In the Enlightenment there were Voltaire, Montesquieu, Pascal and Rousseaux .In the early modern period there were Descartes Spinoza, Leibniz, Hume, Locke, Berkeley and Kant. In the 19th century there were Hegel, Marx, Nietzsche, Kierkegaard, Bentham, Stuart Mill and Frege. In the 20th century there were Husserl, Bergson, Russel, Heidegger, Sartre, , Levy-Strauss, Lacan, Deridda and Foucault.
Nietzsche didn't live at the time when Hitler rose to public so he didn't have a change to comment Hitler's actions. It is although well-known that Nietzsche was strongly against Anti-Semitism and Pan-Germanism, two main principles of the Nazi ideology, so there is a high change he would have opposed Hitler. If Nietzsche wouldn't have been against Hitler, he would have opposed at least the Nazis, who meet Nietzsche's definition of "herd" (a group of "slaves" who can't become "masters" themselves).
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There are a number of famous Spanish Muslim philosophers. Two of these philosophers include Ibn Rushd, as well as Avemace.
Hypatia and Mary Wollstonecraft.
Buddhism
Aristotle and Plato.
Two famous Greek philosophers are Socrates, known for his method of questioning to stimulate critical thinking and Plato, who was his student and known for his theories on ethics, justice, and politics.