All men are by nature free; you have therefore an undoubted liberty to depart whenever you please, but will have many and great difficulties to encounter in passing the frontiers.
There's scarce a point whereon mankind agree - So well as in their boast of killing me; I boast of nothing, but when I've a mind - I think I can be even with mankind
Answer me, you who believe that animals are only machines. Has nature arranged for this animal to have all the machinery of feelings only in order for it not to have any at all?
The harmony of a concert, to which you listen with delight, must have on certain classes of minute animals the effect of terrible thunder; perhaps it kills them.