We are sorry to confess that biological hypotheses have not yet completely got out of the second phase, and that ghost of ‘vital force’ still haunts many wise heads.
Ludwig BuchnerA creative force that either creates itself or arises from nothing, and which is a causa sui (its own cause), exactly resembles Baron Munchhausen, who drew himself out of the bog by taking hold of his own hair.
Ludwig BuchnerThe universe, as we see it, is the result of regularly working forces, having a causal connection with each other and therefore capable of being understood by human reason.
Ludwig Buchner