Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Jean le Rond d'Alembert:

This text has been unreferenced on Wikipedia for a very long time. If you can't find a source, be bold and remove it!

"

When the Encyclopédie was organised in the late 1740s, d'Alembert was engaged as co-editor (for mathematics and science) with Diderot, and served until a series of crises temporarily interrupted the publication in 1757. He authored over a thousand articles for it, including the famous Preliminary Discourse. D'Alembert "abandoned the foundation of Materialism"[4] when he "doubted whether there exists outside us anything corresponding to what we suppose we see."[4] In this way, d'Alembert agreed with the Idealist Berkeley and anticipated the transcendental idealism of Kant.[citation needed]