In completing one discovery we never fail to get an imperfect knowledge of others of which we could have no idea before, so that we cannot solve one doubt without creating several new ones.
Interpretation
Every new discovery brings new questions and uncertainties, complicating our understanding rather than simplifying it.
Joseph Priestley's quote highlights the inherent nature of discovery and knowledge acquisition: for every answer we find, new queries emerge, reflecting the complexity of understanding the universe. This endless cycle of questioning signifies that knowledge is not a linear path but a vast web of interconnected ideas, where insights lead to further mysteries.
In practice
In a science presentation discussing the discoveries in quantum physics.
To me there is in happiness an element of self-forgetfulness. You lose yourself in something outside yourself when you are happy; just as when you are desperately miserable you are intensely conscious of yourself, are a solid little lump of ego weighing a ton.
Every man, when he comes to be sensible of his natural rights, and to feel his own importance, will consider himself as fully equal to any other person whatever
It is absolutely safe to say that if you meet somebody who claims not to believe in evolution, that person is ignorant, stupid or insane (or wicked, but I'd rather not consider that).
String theory has the potential to show that all of the wondrous happenings in the universe - from the frantic dance of subatomic quarks to the stately waltz of orbiting binary stars; from the primordial fireball of the big bang to the majestic swirl of heavenly galaxies - are reflections of one, grand physical principle, one master equation.
Everyone is trying to jump on the biomimic bandwagon. But a cork floor is not biomimicry. Neither is using bacteria to clean water.
It may be said "In research, if you know what you are doing, then you shouldn't be doing it." In a sense, if the answer turns out to be exactly what you expected, then you have learned nothing new, although you may have had your confidence increased somewhat.
In the process of natural selection, then, any device that can insert a higher proportion of certain genes into subsequent generations will come to characterize the species.
Space, the final frontier. These are the voyages of the starship Enterprise. Its five-year mission: to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before.
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