To change the very concept of a category is to change not only our concept of mind, but also our understanding of the world. Categories are categories of things. […] We tend to attribute a real existence to those categories. […] We have categories for everything we can think about.
- Lakoff (1987), a pag.9

Category structure plays a role in reasoning.
- Lakoff (1987), a pag.45

Many categories are understood in terms of abstract ideal cases-which may be neither typical nor stereotypical. For example, - The ideal husband is a good provider, faithful, strong, respective, attractive. - The stereotypical husband is bumbling, dull, pot-bellied.
- Lakoff (1987), a pag.87

What research on categorization shows clearly is that human categories are very much tied to human experiences and that any attempt to account for them free of such experience is doomed to failure.
- Lakoff (1987), a pag.206

Categories (in general) are understood in terms of CONTAINER schemas.
- Lakoff (1987), a pag.283

From the time of Aristotle to the later work of Wittgenstein, categories were thought to be well understood and unproblematic. They were assumed to be abstract containers, with things either inside or outside the category. Things were assumed to be in the same category if and only if they had certain properties in common. And the properties they had in common were taken as defining the category.
- Lakoff (1987), a pag.6