One of the defects of our civilization is that it does not know what todo with its knowledge. Science, as we have seen, has given us powersfit for the gods, yet we use them like SN al children. For example,we do not know how to manage our machines. Machines were madeto be man's servants, yet he has grown so dependent on them thatthey are in a fair way to become his masters. Men spend most oftheir lives looking after and waiting upon machines. And themachines are very stern masters. They must be fed with coal, andgiven petrol to drink, and oil to wash with, and they must be kept atthe right temperature. And if they do not get their meals when theyexpect them, they grow sulky and refuse to WORK, burst with rageand blow up, and spread ruin and DESTRUCTION all around them. SOWE have to wait upon them very attentively and do all that we can tokeep them in good TEMPER. Already we find it difficult either to workor play without the machines and a time may come when they willrule us altogether, just as we rule the animals.short passage solved