David Hume

"Human Nature is the only science of man; and yet has been hitherto the most neglected."

"Men often act knowingly against their interest."

"The corruption of the best things gives rise to the worst."

"The law always limits every power it gives."

"The life of man is of no greater importance to the universe than that of an oyster."

"There is not to be found, in all history, any miracle attested by a sufficient number of men, of such unquestioned good sense, education and learning, as to secure us against all delusion in themselves."