Reason is nothing without imagination, but imagination does not imply reason, it appears.

Nihil sub sole novum, as it says in the Bible.

(There is nothing new under the sun)

A bit of the old on the internet no-one knows you're a dog, I think. Therefore I am a webdev dog too.

How do we know that the thoughts which occur in dreaming are false rather than those others which we experience when awake, since the former are often not less vivid and distinct than the latter?

Doubt is the origin of wisdom.

It is a mark of prudence never to place our complete trust in those who have deceived us even once.