Zeal without knowledge is fire without light.

To furnish the means of acquiring knowledge is the greatest benefit that can be conferred upon mankind. It prolongs life itself and enlarges the sphere of human existence.

Opinion is the medium between knowledge and ignorance.

There is a wisdom in this beyond the rules of physic. A man’s own observation, what he finds good of and what he finds hurt of, is the best physic to preserve health.

Cherish that which is within you, and shut off that which is without; for much knowledge is a curse.

I keep six honest serving men (they taught me all I knew); Their names are What and Why and When And How and Where and Who.

No man can reveal to you aught but that which already lies half asleep in the dawning of your knowledge.

They [the Americans] have all a lively faith in the perfectibility of man, they judge that the diffusion of knowledge must necessarily be advantageous, and the consequences of ignorance fatal; they all consider society as a body in a state of improvement, humanity as a changing scene, in which nothing is, or ought to be, permanent; and they admit that what appears to them today to be good, may be superseded by something better tomorrow.

For beautiful eyes, look for the good in others; for beautiful lips, speak only words of kindness; and for poise, walk with the knowledge that you are never alone.