The best advice I ever got was that knowledge is power and to keep reading.
To know, is to know that you know nothing. That is the meaning of true knowledge.
An investment in knowledge pays the best interest.
A great deal of intelligence can be invested in ignorance when the need for illusion is deep.
It takes considerable knowledge just to realize the extent of your own ignorance.
Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity.