21.  His scientific discoveries and his fight for religious and political freedom, form equally important parts of an exceptionally industrious life.

22.  How then did this apolitical, academic subject come to play such an important part in the development of Marxism?

23.  Immaturity seems to play an important part in the subsequent development of respiratory illness in childhood.

24.  In sheltered housing the warden has a very important part to play.

25.  It is impossible to select any important part of it without soon realising that its root is firmly grounded in atheism.

26.  It is in this way a world view, of which psychoanalysis forms an important part.

27.  It is still, however, potentially a very important part of the strategic analysis required.