How it comes that certain colours, sounds and forms should give pleasure to man and the lower animals, that is, how the sense of beauty in its simplest form was first acquired, we do not know any more than how certain odours and flavours were first rendered agreeable.
Ez dakigu nola gertatzen den zenbait kolore, doinu eta formak gizakiari eta behe-formei plazerra ematea-hau da, nola bereganatu zuen izaki organikoak lehen aldiz edertasun sena beronen era xumeenean-, zenbait kolore eta zapore lehen aldiz gustuko nola bihurtu ziren ez dakigun legez.