Enrico Fermi

Physics Italian-American 1901 – 1954 565 quotes

Created first nuclear reactor, contributed to quantum theory

Most quoted

"A human being is a part of a whole, called by us universe, a part limited in time and space. He experiences himself, his thoughts and feelings as something separated from the rest... a kind of optical delusion of his consciousness. This delusion is a kind of prison for us, restricting us to our personal desires and to affection for a few persons nearest to us. Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty."

— from Attributed

"The important thing is not to stop questioning. Curiosity has its own reason for existence. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery each day."

— from Attributed

"Before we knew anything about the structure of the nucleus, we knew that it was very small. And we knew that it was very heavy. And we knew that it was very stable. And we knew that it was very energetic. And we knew that it was very mysterious."

— from Attributed

All quotes by Enrico Fermi (565)

I am an optimist, but I am also a realist.

Attributed

The progress of science depends on the free exchange of ideas.

Attributed

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'

Attributed (often associated with Isaac Asimov, but similar sentiments expressed by Fermi)

One of the most important things in science is to be able to estimate orders of magnitude.

Attributed, referring to 'Fermi problems'

The job of a scientist is to find out how the world works, not to tell people what to do with that knowledge.

Discussion during the Manhattan Project 1945

The discovery of nuclear fission was a great achievement, but it also brought with it a great responsibility.

Speech 1945

I have always been interested in the fundamental questions of physics.

Attributed

The universe is a strange and wonderful place.

Attributed

The most important thing is to have a good understanding of the basic principles.

Attributed

Science is a human endeavor, and it is subject to human error.

Attributed

The future of humanity depends on our ability to solve the problems we face.

Speech 1946

I am not afraid of death, but I am not in a hurry to die.

Towards the end of his life 1954

The most important thing is to be honest with yourself and with others.

Attributed

The universe is much bigger than we can imagine.

Attributed

The most important thing is to never give up.

Attributed

The greatest challenge facing humanity is to learn to live together in peace.

Speech 1946

I have always been fascinated by the mysteries of the universe.

Attributed

The most important thing is to be open to new ideas.

Attributed

The universe is a vast and complex system.

Attributed

The most important thing is to be curious.

Attributed