Science is knowledge arranged and classified according to truth facts and the general laws of nature.

No part of the world can be truly understood without a knowledge of its garment of vegetation for this determines not only the nature of the animal inhabitants but also the occupations of the majority of human beings.

Every mind was made for growth for knowledge and its nature is sinned against when it is doomed to ignorance.

Learn from me if not by my precepts then by my example how dangerous is the pursuit of knowledge and how much happier is that man who believes his native town to be the world than he who aspires to be greater than his nature will allow.

The Greeks possessed a knowledge of human nature we seem hardly able to attain to without passing through the strengthening hibernation of a new barbarism.

What is called an acute knowledge of human nature is mostly nothing but the observer's own weaknesses reflected back from others.

There are three principal means of acquiring knowledge... observation of nature reflection and experimentation. Observation collects facts reflection combines them experimentation verifies the result of that combination.

Our treasure lies in the beehive of our knowledge. We are perpetually on the way thither being by nature winged insects and honey gatherers of the mind.

All men by nature desire knowledge.

There is something mean in human nature that prefers to think evil that gives a willing ear and a ready welcome to calumny a sort of jealousy of goodness and greatness and things of good report.