Galileo Galilei Quotes

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

Intuition does not in itself amount to knowledge, yet cannot be disregarded by philosophers and psychologists.

Intuition and concepts constitute... the elements of all our knowledge, so that neither concepts without an intuition in some way corresponding to them, nor intuition without concepts, can yield knowledge.

Common Sense is that which judges the things given to it by other senses.

Reason is the natural order of truth; but imagination is the organ of meaning.

It can't be Nature, for it is not sense.

Imagination is a poor matter when it has to part company with understanding.

Thoughts without content are empty, intuitions without concepts are blind

Some like to understand what they believe in. Others like to believe in what they understand.

I do not feel obliged to believe that the same God who has endowed us with senses, reason and intellect has intended us to forego their use and by some other means to give us knowledge which we can attain by them.

It is by logic we prove. It is by intuition we discover.

Intuition is for thinking what observation is for perception. Intuition and observation are the sources of our knowledge.

You're chained to you reason ... Understanding is only a very small affair, so very small

The beauty of science hugely outranks the charms of superstition.

Eyesight should learn from reason.

Reason is man's faculty for grasping the world by thought, in contradiction to intelligence, which is man's ability to manipulate the world with the help of thought. Reason is man's instrument for arriving at the truth, intelligence is man's instrument for manipulating the world more successfully; the former is essentially human, the latter belongs to the animal part of man.

In what we really understand, we reason but little.

Thinking does not lead to truth; truth is the beginning of thought.

A man may imagine things that are false, but he can only understand things that are true, for if the things be false, the apprehension of them is not understanding.

Most men seem to live according to sense rather than reason.

The man of science is a poor philosopher.

People are not stupid.

Getting rid of a delusion makes us wiser than getting hold of a truth.

I possess a strong sense of reason.

Scientia is knowledge. It is only in the popular mind that it is equated with facts.