▁and ▁early ▁English ▁econom ists ▁and ▁without ▁an ▁account ▁of ▁life ▁from ▁the ▁" inside ." ▁Consider ▁in ▁this ▁light ▁Dar win ' s ▁own ▁introduction ▁to ▁the ▁first ▁edition ▁of ▁Origin ; ▁also ▁N iet z sche ' s ▁critique ▁to ▁the ▁effect ▁that ▁Dar win ism , ▁as ▁typically ▁understood , ▁is ▁trad ing ▁in ▁a ▁new ▁version ▁of ▁the ▁Prov ident ial : ▁Where ver ▁progress ▁is ▁to ▁ens ue , ▁devi ating ▁n atures ▁are ▁of ▁greatest ▁importance . ▁Every ▁progress ▁of ▁the ▁whole ▁must ▁be ▁preced ed ▁by ▁a ▁partial ▁weak ening . ▁The ▁strong est ▁n atures ▁retain ▁the ▁type , ▁the ▁we aker ▁ones ▁help ▁to ▁advance ▁it . ▁Something ▁similar ▁also ▁happens ▁in ▁the ▁individual . ▁There ▁is ▁rarely ▁a ▁deg ener ation , ▁a ▁trunc ation , ▁or ▁even ▁a ▁vice ▁or ▁any ▁physical ▁or ▁" m oral " ▁loss ▁without ▁an ▁advantage ▁somewhere ▁else . ▁In ▁a ▁war like ▁and ▁rest less ▁cl an , ▁for ▁example , ▁the ▁sick lier ▁man ▁may ▁have ▁occasion ▁to ▁be ▁alone , ▁and ▁may ▁therefore ▁become ▁qui eter ▁and ▁w iser ; ▁the ▁one - ey ed ▁man ▁will ▁have ▁one ▁eye ▁the ▁stronger ; ▁the ▁blind ▁man ▁may ▁see ▁deeper ▁in ward ly , ▁and ▁certainly ▁hear ▁better . ▁To ▁this ▁extent , ▁the ▁famous ▁theory ▁of ▁the ▁surv ival ▁of ▁the ▁f ittest ▁does ▁not ▁seem ▁to ▁be ▁the ▁only ▁view point ▁from ▁which ▁to ▁explain ▁the ▁progress ▁of ▁strength ening ▁of ▁a ▁man