Leviathan

The sciences are small powers; because not eminent, and therefore, not acknowledged in any man; nor are at all, but in a few, and in them, but of a few things. For science is of that nature, as none can understand it to be, but such as in a good measure have attained it.

And as in other things, so in men, not the seller, but the buyer determines the price. For let a man, as most men do, rate themselves at the highest value they can, yet their true value is no more than it is esteemed by others.

To have done more hurt to a man than he can or is willing to expiate inclineth the doer to hate the sufferer. For he must expect revenge or forgiveness; both which are hateful.

They invoked also their own wit, by the name of Muses; their own ignorance, by the name of Fortune; their own lust, by the name of Cupid; their own rage, by the name Furies; their own privy members by the name of Priapus; and attributed their pollutions to incubi and succubae: insomuch as there was nothing which a poet could introduce as a person in his poem which they did not make either a god or a devil.

To this war of every man against every man, this also is consequent; that nothing can be unjust. The notions of right and wrong, justice and injustice have there no place. Where there is no common power, there is no law; where no law, no injustice.