Whoever claims that economic competition represents survival of the fittest in the sense of the law of the jungle, provides the clearest possible evidence of his lack of knowledge of economics. George Reisman
We too, through lack of knowledge and of sufficiently mature reflection, mistook the visible outward appearance of the phenomenon for the phenomenon itself. Leon Jouhaux
Trump's lack of knowledge or experience or solutions would be bad enough. But what he's doing here is more sinister. Trump is reinforcing harmful stereotypes and offering a dog whistle to his most hateful supporters. It's a disturbing preview of what kind of President he'd be. Hillary Clinton
Lack of knowledge concerning all the factors and the failure to include them in our integral imposes false conclusions. Buckminster Fuller
Ignorance is not a simple lack of knowledge but an active aversion to knowledge, the refusal to know, issuing from cowardice, pride or laziness of mind. Karl Popper
Lack of knowledge is darker than night. African Proverb