...there is no real advance in human reason, for what we gain in one direction we lose in another; for all minds start from the same point, and as the time spent in learning what others have thought is so much time lost in learning to think for ourselves, we have more acquired knowledge and less vigor of mind. Our minds like our arms are accustomed to use tools for everything, and to do nothing for themselves.

The progress of science has always been the result of a close interplay between our concepts of the universe and our observations on nature. The former can only evolve out of the latter and yet the latter is also conditioned greatly by the former. Thus in our exploration of nature, the interplay between our concepts and our observations may sometimes lead to totally unexpected aspects among already familiar phenomena.

Not once not twice but at least a dozen times i have advanced an idea to people who thought i was either dreaming , imagining the impossible or just in over my head. When the birth of a rare idea lives to see the light of day it is astounding . I have some ideas am now advancing and i am watching closely the discomfort change presents. To achieve different results we have to change how we do things , we must slay lunacy

In the years since man unlocked the power stored up within the atom, the world has made progress, halting, but effective, toward bringing that power under human control. The challenge may be our salvation. As we begin to master the destructive potentialities of modern science, we move toward a new era in which science can fulfill its creative promise and help bring into existence the happiest society the world has ever known.

Change, development and progress, according to the Islamic viewpoint, refer to the return to the genuine Islam enunciated and practised by the Holy Prophet (may God bless and give him Peace!) and his noble Companions and their Followers (blessing and peace be upon them all!) and the faith and practice of genuine Muslims after them; and they also refer to the self and mean its return to its original nature and religion (Islam).

I invented nothing new. I simply assembled the discoveries of other men behind whom were centuries of work. Had I worked fifty or ten or even five years before, I would have failed. So it is with every new thing. Progress happens when all the factors that make for it are ready, and then it is inevitable. To teach that a comparatively few men are responsible for the greatest forward steps of mankind is the worst sort of nonsense.

Garret went across the street to the library. There was a hole in the sidewalk the size of a bathtub. Construction was being done, was always being done. It was the journey that mattered, Garret thought woozily, the getting-there part. The mayor, and then the president, had begun saying that. "And where are we going?" the mayor had asked. "When will we get there? What will happen to us once we get there?" He really wanted to know.

[To] mechanical progress there is apparently no end: for as in the past so in the future, each step in any direction will remove limits and bring in past barriers which have till then blocked the way in other directions; and so what for the time may appear to be a visible or practical limit will turn out to be but a bend in the road.(Opening address to the Mechanical Science Section, Meeting of the British Association, Manchester.)

Once, when she was trying to explain why she’d returned to Hungary, Marika said, 'Sometimes if you don’t go backwards, you can’t move forwards.' I’d repeated this to my father, hoping he’d be able to unravel her words. But he’d just muttered something about stubborn cars meeting on country lanes and I’d thought it best to ask no more. Now, though, I think we both know what she meant.

This capacity for living easily and familiarly at an extraordinary level of abstraction is the source of modern man's power. With it he has transformed the planet, annihilated space, and trebled the world's population. But it is also a power which has, like everything human, its negative side, in the desolating sense of rootlessness, vacuity, and the lack of concrete feeling that assails modern man in his moments of real anxiety.

The lapse of ages changes all things - time - language - the earth - the bounds of the sea - the stars of the sky, and everything 'about, around, and underneath' man, except man himself, who has always been and always will be, an unlucky rascal. The infinite variety of lives conduct but to death, and the infinity of wishes lead but to disappointment. All the discoveries which have yet been made have multiplied little but existence.

Do you realize it’s been only a century that we’ve been able to go from house to car to office to car to wherever, with the heater on, and the defroster on, protected from the rain and the cold? It hasn’t been much longer than that we’ve had lighting for streets. Think of all that darkness, all that world out there, all that mystery that we’ve turned into well-lighted concrete bunkers, safe and warm and dull.

The scientist is not responsible for the laws of nature. It is his job to find out how these laws operate. It is the scientist’s job to find the ways in which these laws can serve the human will. However, it is not the scientist’s job to determine whether a hydrogen bomb should be constructed, whether it should be used, or how it should be used. This responsibility rests with the American people and with their chosen representatives.

An old market had stood there until I'd been about six years old, when the authorities had renamed it the Olde Market, destroyed it, and built a new market devoted to selling T-shirts and other objects with pictures of the old market. Meanwhile, the people who had operated the little stalls in the old market had gone elsewhere and set up a thing on the edge of town that was now called the New Market even though it was actually the old market.

Roosevelt spoke eloquently, in his penetrating tenor, of those 'who at this very moment are denied the greater part of what the very lowest standards of today call the necessities of life . . . I see one-third of a nation ill-housed, ill-clad, ill-nourished,' he told the audience, '. . . The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.