"We must stick to our sensations, that is, simply to the present impressions whether of the mind or of any criterion whatever, and similarly to our actual feelings, in order that we may have the means of determining that which needs confirmation and that which is obscure."
(in Diogenes Laertius X.38)
The Epicurean sought to live life in accord with the laws of the universe. To do so required understanding of how the universe functioned, so physics was extremely important. Epicureans relied on their senses to understand the nature of the universe as conceived by