134 SCIENTIST 



important thing to be considered. The early years of be- 

 coming a scientist demand continuous concentration of 

 one's physical and intellectual energies. Only the excep- 

 tional man or woman can achieve the level necessary 

 and at the same time give adequate attention to the de- 

 mands of a number of children, which may range all the 

 way from diaper-changing to conferences with teachers 

 about problems of social adjustment in school. In former 

 times most men simply did not assume the responsibility 

 of fatherhood until after they were firmly established in 

 a trade or profession. Aside from the purely financial 

 aspects of the matter, it seemed much wiser to train oneself 

 for these two very different occupations one at a time. 

 It still seems wise to me. 



Notes 



*For total elapsed time between the A.B. and Ph.D. degrees, cf. 

 Graduate Education in the United States by Bernard Berelson, New 

 York, McGraw-Hill Book Company, Inc., p. 157, 1960. 



