Some time in the past the credo of more knowledge is good came into being. In some cases this is true but the reality is knowledge is only as good as the purpose it serves. Or more accurately, the results of that service. This leads to the postulate that knowledge is neither good nor bad. It is benign until it is applied.
The lack of knowledge falls into the same crucible of benign existence. What we don't know may help us or hurt us depending on ourselves and others in the context of the results of not knowing. Since we will never know everything, this is as it should be as long as one acts with knowledge that both sets can be used for good as well as bad results.
This would be where wisdom comes in. And wisdom has to include not just our desires but the needs of our neighbors. Not to include the welfare of all is not wise. It's greed.
To many people assume that the knowledge they possess makes them special. This assumption is both arrogant and wrong. This perverse attitude shows up everywhere. Some of the smartest people I know of are the worst offenders. They can not help themselves mostly because they are not perfect. But even when they know that fact it seems easy for them to dismiss their dishonesty because they believe the amount of knowledge they possess makes it alright. They become defensive when challenged. Hard to disguise when you're crippled inside.
On that score, we ALL limp through life. The best of the best is still a cripple. Best to be wise and be honest. Don't try to hide the fact that you are human and therefore not perfect. You can fool some of the people all the time, all the people some of the time, but you can't fool all the people all the time.