To acquire knowledge, one must study; but to acquire wisdom, one must observe.

Thought is the wind, knowledge the sail, and mankind the vessel.

The aim of education is the knowledge, not of facts, but of values.

Discussion is an exchange of knowledge; an argument an exchange of ignorance.

If four things are followed - having a great aim, acquiring knowledge, hard work, and perseverance - then anything can be achieved.

Science is organized knowledge. Wisdom is organized life.

Knowledge is of no value unless you put it into practice.

Science is a way of thinking much more than it is a body of knowledge.

The true sign of intelligence is not knowledge but imagination.

There are no secrets to success. It is the result of preparation, hard work, and learning from failure.