[Ernest Rutherford is]...a second Newton.
Don't do anything that goes against your conscience, even if your country says so.
The most difficult part about understanding something is that we understand it all.
If people are good because they fear punishment, and hope for reward, then we are a sorry lot indeed.
Mathematics deals exclusively with the relations of concepts to each other without consideration of their relation to experience.
Discussion and argument are essential parts of science; the greatest talent is the ability to strip a theory until the simple basic idea emerges with clarity.