Stephen Hawking
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

Arthur C. Clarke
Information is not knowledge, knowledge is not wisdom, and wisdom is not foresight. Each grows out of the other, and we need them all.

Michel de Montaigne
A wise man sees as much as he ought, not as much as he can.

Herakeitos
Abundance of knowledge does not teach men to be wise.

Rene Descartes
I would give everything I know, for half of what I do not know.

Sokrates
The only true wisdom is in knowing you know nothing.

Francis Bacon
Knowledge is power.

Charles Montesquieu
You have to study a great deal to know a little.

Ralph Waldo Emerson
The secret in education lies in respecting the student.