The tree of knowledge is not the tree of life! And yet can we cast out of our spirits all the good or evil poured into them by so many learned generations? Ignorance cannot be learned. – Gerard De Nerval
Agricultural practice served Darwin as the material basis for the elaboration of his theory of Evolution, which explained the natural causation of the adaptation we see in the structure of the organic world. That was a great advance in the knowledge of living nature. – Trofim Lysenko
Leisure and curiosity might soon make great advances in useful knowledge, were they not diverted by minute emulation and laborious trifles. – Samuel Johnson
