This callectian 'Of essays is, generally speaking, a cantinuatian of the themes that I have discussed in my baak Z metodologicz- nych problemow interpretacji humanistycznej.l Naturally, by continuatian I mean a resumptian 'Of certain questions that were already dealt with in the previous baok. But I treated them rather summarily there, and naw I will present them in greater detail. While daing so, I will have to face new issues, which were ignared previously, but which have ta be salved, at least tentatively, in 'Order ta make it passible for me ta elabarate more fully the suggestions made a...

It was only after I had finished this volume that I came across the book by Barry Bames, Scientific Knowledge and Sociologi- cal Theory (Routledge and Kegan Paul). I am in full ag,reement with certain ideas expounded in that book, although it also contains others that I must object to. I have decided to make some remarks about them at the beginning of my book, as I believe that they may prove useful by way of int,roduction to the English version of this volume. I hope that anyone who has professional reasons to turn his attention to this volume will have acquainted himself with Scientific...