From childhood I was compelled to concentrate attention upon myself. This caused me much suffering, but to my present view, it was a blessing in disguise for it has taught me to appreciate the inestimable value of introspection in the preservation of life, as well as a means of achievement.

The scientists of today think deeply instead of clearly. One must be sane to think clearly, but one can think deeply and be quite insane.

Of all the frictional resistances, the one that most retards human movement is ignorance, what Buddha called 'the greatest evil in the world.' The friction which results from ignorance ... can be reduced only by the spread of knowledge and the unification of the heterogeneous elements of humanity. No effort could be better spent.

I have harnessed the cosmic rays and caused them to operate a motive device.

Of all the frictional resistances, the one that most retards human movement is ignorance.

Life is and will ever remain an equation incapable of solution, but it contains certain known factors.

If Mr. Edison had thought smarter he wouldn't sweat as much.