It is when those who are not strong enough have made some moderate amount of progress that they fail and give up.
ConfuciusBecause the newer methods of treatment are good, it does not follow that the old ones were bad: for if our honorable and worshipful ancestors had not recovered from their ailments, you and I would not be here today.
ConfuciusThere are three things against which the wise man guards: lust when young, quarrels when strong, and covetousness when old.
Confucius