"Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something and that this thing must be attained."
"Nothing in life is to be feared; it is only to be understood."
"I am one of those who think like Nobel, that humanity will draw more good than evil from new discoveries."
"I am among those who think that science has great beauty. A scientist in his laboratory is not only a technician: he is also a child placed before natural phenomena which impress him like a fairy tale."
"One never notices what has been done; one can only see what remains to be done."
"Have no fear of perfection; you'll never reach it."
"Humanity also needs dreamers, for whom the disinterested development of an enterprise is so captivating that it becomes impossible for them to devote their care to their own material profit."
"You cannot hope to build a better world without improving the individuals. To that end each of us must work for his own improvement, and at the same time share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful."
"I was taught that the way of progress was neither swift nor easy."
"Be less curious about people and more curious about ideas."