"But all science would be superfluous if the outward appearance and the essence of things directly coincided." -- Karl Marx
"Men are deceived in thinking themselves free, a belief that consists only in this, that they are conscious of their actions and ignorant of the causes by which they are determined." -- Benedict de Spinoza
"Monks, a statement endowed with five factors is well-spoken, not ill-spoken. It is blameless & unfaulted by knowledgeable people. Which five?
It is spoken at the right time. It is spoken in truth. It is spoken affectionately. It is spoken beneficially. It is spoken with a mind of good-will." -- Gautama Buddha, (AN 5.189)