( It ( ( ( is ( only natural ) ) ( that ( ( ( a man ) ( who ( is ( making ( ( a ( scientific study ) ) ( of ( ( the laws ) ( of ( human nature ) ) ) ) ) ) ) ) ) ( should ( ( ( find ( no room ) ) ( for ( an assertion ) ) ) ( that ( ( within ( a ( certain sphere ) ) ) ( there ( are ( no laws ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (ADJP (RB only) (JJ natural)) (SBAR (IN that) (S (NP (NP (DT a) (NN man)) (SBAR (WHNP (WP who)) (S (VP (VBZ is) (VP (VBG making) (NP (NP (DT a) (JJ scientific) (NN study)) (PP (IN of) (NP (NP (DT the) (NNS laws)) (PP (IN of) (NP (JJ human) (NN nature))))))))))) (VP (MD should) (VP (VB find) (NP (DT no) (NN room)) (PP (IN for) (NP (DT an) (NN assertion))) (SBAR (IN that) (S (PP (IN within) (NP (DT a) (JJ certain) (NN sphere))) (NP (EX there)) (VP (VBP are) (NP (DT no) (NNS laws)))))))))) (. .)))
It is only natural that a man who is making a scientific study of the laws of human nature should find no room for an assertion that within a certain sphere there are no laws.
(ROOT (S (NP (NP (DT A) (NN statement)) (SBAR (WHNP (WDT that)) (S (VP (VBZ describes) (SBAR (WHNP (WP what)) (S (ADVP (RB always)) (VP (VBZ happens) (PP (IN under) (NP (NP (JJ certain) (NNS conditions)) (PP (IN in) (NP (NN nature)))))))))))) (VP (VBZ is) (ADVP (RB also)) (VP (VBN known) (PP (IN as) (NP (JJ scientific) (NN law))))) (. .)))