'Normal science' means research firmly based upon one or more past scientific achievements, achievements that some particular scientific community acknowledges for a time as supplying the foundation for its further practice.

..und Juwele wägt man nicht mit der Krämerwaage
... and jewels are not weighed on a grocery scale.
Comment on Dirichlet's publication as being not prolific, but profound.

High achievement always takes place in the framework of high expectation.

I am busy just now again on Electro-Magnetism and think I have got hold of a good thing but can't say; it may be a weed instead of a fish that after all my labour I may at last pull up.

I am mindful that scientific achievement is rooted in the past, is cultivated to full stature by many contemporaries and flourishes only in favorable environment. No individual is alone responsible for a single stepping stone along the path of progress, and where the path is smooth progress is most rapid. In my own work this has been particularly true.

I find I'm luckier when I work harder.

I still take failure very seriously, but I've found that the only way I could overcome the feeling is to keep on working, and trying to benefit from failures or disappointments. There are always some lessons to be learned. So I keep on working.

I've always felt that maybe one of the reasons that I did well as a student and made such good grades was because I lacked ... self-confidence, and I never felt that I was prepared to take an examination, and I had to study a little bit extra. So that sort of lack of confidence helped me, I think, to make a good record when I was a student.

I've always thought that my exposure to competitive sports helped me a great deal in the operating room. It teaches you endurance, and it teaches you how to cope with defeat, and with complications of all sort. I think I'm a well-coordinated person, more than average, and I think that came through my interest in sports, and athletics. ... [Playing basketball] You have to make decisions promptly, and that's true in the operating room as well.

If you care to be a master or to make a true success of your profession, the smallest detail of your work must be done with thoroughness. To be thorough in medicine means that in the ever alluring present, we do not forget the past.

In my opinion instruction is very purposeless for such individuals who do no want merely to collect a mass of knowledge, but are mainly interested in exercising (training) their own powers. One doesn't need to grasp such a one by the hand and lead him to the goal, but only from time to time give him suggestions, in order that he may reach it himself in the shortest way.

In the past, few women have tried and even fewer have succeeded.

In truth, people can generally make time for what they choose to do; it is not really the time but the will that is lacking

Inanimate objects are classified scientifically into three categories—those that don't work, those that break down, and those that get lost. The goal of all inanimate objects is to resist man and ultimately to defeat him, and the three major classifications are based on the method each object uses to achieve its purpose

It strikes me as unfair, and even in bad taste, to select a few of them for boundless admiration, attributing superhuman powers of mind and character to them. This has been my fate, and the contrast between the popular estimate of my powers and achievements and the reality is simply grotesque.

It's amazing what ordinary people can do if they set out without preconceived notions.

Life levels all men: death reveals the eminent.

Mapping the human genome has been compared with putting a man on the moon, but I believe it is more than that. This is the outstanding achievement not only of our lifetime, but in terms of human history. A few months ago I compared the project to the invention of the wheel. On reflection, it is more than that. I can well imagine technology making the wheel obsolete. But this code is the essence of mankind, and as long as humans exists, this code is going to be important and will be used.

My definition of an educated man is the fellow who knows the right thing to do at the time it has to be done. You can be sincere and still be stupid.

My young friend, I wish that science would intoxicate you as much as our good Göttingen beer! Upon seeing a student staggering down a street.

No one would have crossed the ocean if he could have gotten off the ship in the storm.

Nothing ever built ... arose to touch the skies unless some man dreamed that it should, some man believed that it could, and some man willed that it must.

That is the way of the scientist. He will spend thirty years in building up a mountain range of facts with the intent to prove a certain theory; then he is so happy with his achievement that as a rule he overlooks the main chief fact of all—that all his accumulation proves an entirely different thing.

The more we realize our minuteness and our impotence in the face of cosmic forces, the more amazing becomes what human beings have achieved.

The reason so many people never get anywhere in life is because when opportunity knocks, they are out in the backyard looking for four-leaf clovers.

The Wright brothers flew right through the smoke screen of impossibility.

There will always be a frontier where there is an open mind and a willing hand.

When I was research head of General Motors and wanted a problem solved, I'd place a table outside the meeting room with a sign: 'Leave slide rules here.' If I didn't do that, I'd find someone reaching for his slide rule. Then he'd be on his feet saying, 'Boss, you can't do it.'

When science, art, literature, and philosophy are simply the manifestation of personality, they are on a level where glorious and dazzling achievements are possible, which can make a man’s name live for thousands of years. But above this level, far above, separated by an abyss, is the level where the highest things are achieved. These things are essentially anonymous.

When we have done our best, we should wait the result in peace.

Whenever you look at a piece of work and you think the fellow was crazy, then you want to pay some attention to that. One of you is likely to be, and you had better find out which one it is. It makes an awful lot of difference.

[Man] ... his origin, his growth, his hopes and fears, his loves and his beliefs are but the outcome of accidental collocations of atoms; that no fire, no heroism, no intensity of thought and feeling can preserve an individual life beyond the grave; that all the labour of the ages, all the devotion, all the inspiration, all the noonday brightness of human genius are destined to extinction in the vast death of the solar system, and that the whole temple of Man's achievement must inevitably be buried beneath the debris of a universe in ruins...