Science is a way of thinking much more than it is a body of knowledge.
Common sense is the collection of prejudices acquired by age eighteen.
A child educated only at school is an uneducated child.
It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.
The fullness of knowledge only comes through the awareness of ignorance.
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.
Books are for people who wish they were somewhere else.
I do not know how to teach philosophy without becoming a disturber of the peace.
Science is not only a disciple of reason but, also, one of romance and passion.
Evil being the root of mystery, pain is the root of knowledge.
I cannot live without books.
Knowledge, Action, Devotion are complementary to each other.
Books are as useful to a stupid person as a mirror is useful to a blind person.
All stable processes we shall predict. All unstable processes we shall control.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
The most important part of teaching is to teach what it is to know.
Know what you are talking about.
In mathematics you don't understand things. You just get used to them.
Science is what we have learned about how to keep from fooling ourselves.
Knowledge becomes evil if the aim be not virtuous.
The progressive development of man is vitally dependent on invention.