"Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less."
Fear
"Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves."
Perseverance
"Be less curious about people and more curious about ideas."
Knowledge
"A scientific discovery is a private event, and that privacy is a fact about the nature of scientific discovery."
Science
"I was taught that the way of progress was neither swift nor easy."
"If you want to have a good life, you should focus on your goals."
Success
"Life is filled with difficult moments that test our willpower. When these moments come, it is crucial we don't give in."
Courage
"The scientists only open up to the mystical."
Science
"I believe that scientific knowledge should be the common property of all mankind."
Science
"Nothing is so necessary for a young man as the company of intelligent women."
Relationships
"You cannot hope to build a better world without improving the individuals. To that end each of us must work for his own improvement."
Wisdom
"The discovery of X-rays has opened our eyes to a new world."
Science
"The past cannot be changed. The future is yet in your power."
Time
"The only way to deal with an unfree world is to become so absolutely free that very existence of that world is a problem to you."
Freedom
"I was taught that the way of progress was neither swift nor easy."
Change
"Life is not a destination, but a journey to be savored."
Life
"Be strong, believe in freedom and in God, love, study hard, and keep a clear conscience."
Faith
"The scientists are responsible before their country for the knowledge which they have acquired."
"It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all."
Life
"One never notices what has been done; one can only see what remains to be done."
Work
"The effort required to remain faithful to one's conscience is not wasted."
Truth
"In science, there is only physics; all the rest is stamp collecting."
Science
"I was the daughter of a smaller man, but I think he had this large sense of personal honor."
Family
"I am among those who think that science has great beauty."
Science
"Life is tragic simply because the earth turns and the sun inexorably rises and sets, and one day, for each of us, the sun will go down for the last time."
Death
"The important thing is not to stop questioning."
Knowledge
"I have no dress except the one I wear every day. If you are going to emancipate yourself, you should do something about it."
"Science belongs to the people."
Science
"Radium has something to do with the relativity theory. It has something to do with the structure of the atom."
Science
"I should be happy in your studies, and not ambitious."
Education