Quote by Dirac, Paul
"There is no substitute for hard work, but enthusiasm makes it bearable."
More from Dirac, Paul
"The fundamental laws necessary for the mathematical treatment of a large part of physics and the whole of chemistry are thus completely known."
"A theory with mathematical beauty is more likely to be correct."
"The most important thing is to have the right to think for yourself."
"In science one should not proceed along the lines of personal preference."