As all careful scientists acknowledge, evolved sex differences are rarely a simple manifestation of essential categories. (psychologytoday.com)
When it comes to the baby essentials category, the first group of baby products pertains to the health and safety of your baby. (tyckledtales.com)
At this point the question arises, how could Dibelius» and Bultmann's essential categories for judgment — that is, the pure form, the opposition between apocalyptic and eschatology and so on — present such evidence to them that they believed they had at their disposal the perfect instrument for gaining a knowledge of history? (firstthings.com)