We are all born ignorant, but one must work hard to remain stupid.
Benjamin Franklin

It is paradoxical, yet true, to say, that the more we know, the more ignorant we become in the absolute sense, for it is only through enlightenment that we become conscious of our limitations. Precisely one of the most gratifying results of intellectual evolution is the continuous opening up of new and greater prospects.
Nikola Tesla

Pollution is nothing but the resources we are not harvesting. We allow them to disperse because we've been ignorant of their value.
R. Buckminster Fuller

The learning and knowledge that we have, is, at the most, but little compared with that of which we are ignorant.
Plato

The ignorant mind, with its infinite afflictions, passions, and evils, is rooted in the three poisons. Greed, anger, and delusion.
Bodhidharma

The person you consider ignorant and insignificant is the one who came from God, that he might learn bliss from grief and knowledge from gloom.
Khalil Gibran

Ignorant men raise questions that wise men answered a thousand years ago.
Johann Wolfgang von Goethe