There are more things in heaven and earth, Horatio,
Than are dreamt of in your philosophy.
William Shakespeare, Hamlet Prince of Denmark, Act 1, Scene 5, Lines 187-188
Philosophy, and in particular metaphysics, has been killed off again and again, day after day, the deed done by a variety of assassins: eighteenth-century empiricists, Hegel, Marx, positivists of every hue, Wittgenstein, and so on. But behold, after all these massacres the poor thing rises from the grave, oblivious to the fact that it is supposed to be dead, and starts walking. Where it is going it admittedly does not know, and nor does anyone else, but that is a different question.
Leszek Kołakowski (1927-2009), "Our Merry Apocalypse," Is God Happy? Selected Essays, Basic Books, 2013, p.318
Nāsato vidyáte bhāvo, nābhāvo vidyáte sataḥ
The unreal never is; the Real never is not.
The Bhagavad Gita, 2:16, Juan Mascaró translation [Penguin Books, 1962, p.49];
the Parmenidean principle of the Bhagavad Gita.
Τοῦτο τοίνυν τὸ τὴν ἀλήθειαν παρέχον τοῖς γιγνωσκομένοις
καὶ τῷ γιγνώσκοντι τὴν δύναμιν ἀποδιδὸν τὴν τοῦ ἀγαθοῦ ἰδέαν
φάθι εἶναι, αἰτίαν δ᾽ ἐπιστήμης οὖσαν καὶ ἀληθείας ὡς
γιγνωσκομένης μὲν διανοοῦ...
This reality, then, that gives their truth to the objects of knowledge and the power of knowing to the knower, you must say is the idea of the good, and you must conceive it as being the cause of knowledge [ἐπιστήμη] and of truth [ἀλήθεια] in so far as known.
Plato, Republic, 508e, Republic II [translated by Paul Shorey, Loeb Classical Library, Harvard University Press, 1930, 1969, pp.102-105, color added]
Die Welt ist meine Vorstellung.
The world is my representation.
Arthur Schopenhauer, Die Welt als Wille und Vorstellung, Band 1, §1 [Reclam, 1987, p.3], The World as Will and Representation, Volume I [Dover Publications, 1966, E.F.J. Payne translation, p.3]