if he does depart from his state of wonder, he has ceased to philosophize.
Source: Leisure, the Basis of Culture (1948), The Philosophical Act, pp. 105–106
“Because philosophy arises from awe, a philosopher is bound in his way to be a lover of myths and poetic fables. Poets and philosophers are alike in being big with wonder.”
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Thomas Aquinas 104
Italian Dominican scholastic philosopher of the Roman Catho… 1225–1274Related quotes

“Wonder is the feeling of a philosopher, and philosophy begins in wonder.”
Theaetetus, 155d
Plato, Theaetetus

“Wonder is the feeling of a philosopher, and philosophy begins in wonder.”
155, The Dialogues of Plato, Volume 3, 1871, p. 377 http://books.google.com/books?id=4kQNAAAAIAAJ&pg=PA377
Theaetetus

Letter to James Laughlin (14 January 1944), published in The Selected Letters of William Carlos Williams (1957) edited by John C. Thirlwall, p. 219
General sources

Metaphysics by Aristotle – Book 1, ClassicalWisdom.com
The second sentence is in Metaphysics A 2, 928<sup>b</sup> 17–20, Aristotle: Metaphysics Beta: Symposium Aristotelicum, Michel Crubellier & Andre´ Laks, eds. (Oxford University Press, 2009), p. 4.
Metaphysics
Variant: [And] one who experiences a difficulty and who feels wonder thinks that he does not understand..., so that, if it is to escape ignorance that they have practised philosophy, then it is clearly for the sake of knowing, and not for any practical purpose, that they have pursued understanding.

Source: Man Against Mass Society (1952), p. 116
“Poets are witnesses to Being before the philosophers are able to bring it into thought.”
Source: Irrational Man: A Study in Existential Philosophy (1958), Chapter Five, Christian sources, p. 105

trans. Michael Chase, p. 272
La Philosophie comme manière de vivre (2001)