His peculiar gift was the power of holding continuously in his mind a purely mental problem until he had seen it through.

He bought a book of Iudicial Astrology out of a curiosity to see what there was in that science & read in it till he came to a figure of the heavens which he c…

Newton was not the first of the age of reason. He was the last of the magicians, the last of the Babylonians and Sumerians, the last great mind that looked out…

Tact is the art of making a point without making an enemy.

'Because thought has by now been perverted into the solving of assigned problems, even what is not assigned is processed like a problem.'

Noise is the most impertinent of all forms of interruption. It is not only an interruption, but also a disruption of thought.

When you are solving a problem, don't worry. Now, after you have solved the problem, then that's the time to worry.