Prudence approaches, conscience accuses.

The sceptics, a kind of nomads, despising all settled culture of the land, broke up from time to time all civil society. Fortunately their number was small, and they could not prevent the old settlers from returning to cultivate the ground afresh, though without any fixed plan or agreement.

A categorical imperative would be one which represented an action as objectively necessary in itself, without reference to any other purpose.

With men, the state of nature is not a state of peace, but war.

It is not necessary that whilst I live I live happily; but it is necessary that so long as I live I should live honourably.

Genius is the ability to independently arrive at and understand concepts that would normally have to be taught by another person.

Of all the arts poetry (which owes its origin almost entirely to genius and will least be guided by precept or example) maintains the first rank.