The only good is knowledge and the only evil is ignorance.
To every action there is always an equal and opposite or contrary, reaction
They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.
The real solution lies in a world in which charity will have become unnecessary.
The progressive development of man is vitally dependent on invention.
Learning gives creativity, Creativity leads to thinking, Thinking provides knowledge, Knowledge makes you great.
Learning never exhausts the mind.
Make it a rule never to give a child a book you would not read yourself.
Real knowledge is to know the extent of one's ignorance.
One test of the correctness of educational procedure is the happiness of the child.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
The secret of life is not enjoyment but education through experience.
If the facts don't fit the theory, change the facts.
It isn't what we don't know that gives us trouble, it's what we know that ain't so.
What is now proved was once only imagined.
Necessity is the mother of invention.
Knowledge is power. Information is liberating. Education is the premise of progress, in every society, in every family.
I cannot teach anybody anything. I can only make them think
An investment in knowledge pays the best interest.
A thought is an idea in transit.
Many much-learned men have no intelligence.