, ▁and ▁the ▁highest ▁aim ▁of ▁natural ▁philosophy ▁was ▁to ▁understand ▁them ▁through ▁an ▁order ly ▁process ▁of ▁induction , ▁bal ancing ▁observation ▁and ▁the or ising . ▁This ▁was ▁part ▁of ▁the ▁liberal ▁Christian ity ▁of ▁Dar win ' s ▁tut ors , ▁who ▁saw ▁no ▁d ish arm ony ▁between ▁honest ▁induct ive ▁science ▁and ▁religion . ▁Such ▁science ▁was ▁religion , ▁and ▁could ▁not ▁be ▁her et ical . ▁Dar win ▁also ▁read ▁Alexander ▁von ▁H umb old t ' s ▁Personal ▁N arr ative , ▁and ▁the ▁two ▁books ▁were ▁imm ens ely ▁influ ential , ▁stir ring ▁up ▁in ▁him ▁" a ▁burning ▁ze al ▁to ▁add ▁even ▁the ▁most ▁hum ble ▁contribution ▁to ▁the ▁noble ▁structure ▁of ▁Natural ▁Science ." ▁As ▁a ▁young ▁gradu ate , ▁H ens low ▁had ▁ge olog ised ▁on ▁the ▁Is le ▁of ▁W ight ▁and ▁the ▁Is le ▁of ▁Man , ▁and ▁he ▁too ▁had ▁long ed ▁to ▁visit ▁Africa . ▁Mar riage ▁and ▁his ▁position ▁at ▁the ▁university ▁now ▁made ▁the ▁prospect ▁remote , ▁but ▁he ▁still ▁had ▁an ▁un ful filled ▁amb ition ▁to ▁" expl ore ▁regions ▁but ▁little ▁known , ▁and ▁en rich ▁science ▁with ▁new ▁species ." ▁ ▁At ▁home ▁for ▁E aster ▁in ▁early ▁April , ▁Dar win ▁told ▁his ▁cousin ▁Fox ▁of ▁" a ▁scheme ▁I ▁have ▁almost ▁h atch ed " ▁to ▁visit ▁the ▁Can ary ▁Islands ▁and ▁see ▁T ener ife ▁as ▁recommended ▁by ▁H umb old t . ▁On ▁returning ▁to