this!"
Professor Maddox turned from the window, which he had been facing. A faint, grim smile touched the corners of his lips and died as he regarded the boys, especially Ken. His face took on a depth of soberness Ken seldom saw in his father. 
"You think nothing is immune to an attack by so-called modern science?" he said.
"Sure!" Ken went on enthusiastically, not understanding the expression on his father's face. "Look at the problems that have been licked as soon as people were determined enough and willing to pay the cost. Giant computers, radar eyes, atomic energy. Everybody knows we could have made it to Mars by now if governments had been willing to put up the necessary money.""You still have to learn, all of you do," Professor Maddox said slowly, "that the thing we call science is only a myth. The only reality consists of human beings trying to solve difficult problems. Their results, which seem to be solutions to some of those problems, we call science. Science has no life of its own. It does not deserve to be spoken of as an entity in its own right. There are only people, whom we call scientists, and their accomplishments are severely limited by their quite meager abilities. Meager, when viewed in comparison with the magnitude of the problems they attack."

Ken felt bewildered. He had never heard his father speak this way before. "Don't you believe there are scientists enough--scientists who know enough--to lick a thing like this in time?"

"I don't know. I'm quite sure no one knows. We became conscious long ago of the fallacy of assuming that the concentration of men enough and unlimited funds would solve any problem in the world. For every great accomplishment like atomic energy, to which we point with pride, there are a thousand other problems, equally important, that remain unsolved. Who knows whether or not this problem of weakened surface tension in metals is one of the insoluble ones?"

"We have to find an answer," said Ken doggedly. He could not understand his father's words. "There's nothing science can't accomplish if it sets about it with enough determination. Nothing!"

Chapter 6. _The Scientist_

Ken spent an almost sleepless night. He tossed for long hours and dozed finally, but he awoke again before there was even a trace of dawn in the sky. Although the night was cool he was sweating as if it were mid-summer.

There was a queasiness in his stomach, too, a slow undefinable pressure on some hidden nerve he had never known he possessed. The feeling 

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