What is freedom of expression? Without the freedom to offend, it ceases to exist.

Reading without reflecting is like eating without digesting.

I am a part of everything that I have read.

Reading is to the mind what exercise is to the body.

The only true wisdom is in knowing you know nothing.

Study without desire spoils the memory, and it retains nothing that it takes in.

The more I read, the more I acquire, the more certain I am that I know nothing.

A little knowledge is a dangerous thing. So is a lot.

To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.

My weapon is literature

That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.

My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.

The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.

The great difficulty in education is to get experience out of ideas.

I do not know how to teach philosophy without becoming a disturber of the peace.

Courage, conviction and confidence.

Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.

Human behavior flows from three main sources: desire, emotion, and knowledge

I cannot live without books.

I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.

Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.