Won over by his enthusiasm, D'Alembert consented to share the task; and he wrote the beautiful exposition in the introduction.

Voltaire sent his articles from Delices.

The Jesuits had proposed to take upon themselves a certain number of questions, but their co-operation was declined: it was a monument to philosophy that the Encyclopaedists aspired to raise; the clergy were in commotion at seeing the hostile army, till then uncertain and unbanded, rally organized and disciplined around this vast enterprise.

An early veto, soon, however, taken off, compelled the philosophers to a certain moderation; Voltaire ceased writing for the _Encyclopaedia;_ it was not sufficiently free-going for him.

"You admit articles worthy of the Trevoux journal," he said to D'Alembert.