I am of the opinion that all the finer speculations in the realm of science spring from a deep religious feeling, and that without such feeling they would not be fruitful.

I refuse to make money out of my science. My laurel is not for sale like so many bales of cotton.

There is nothing known as "Perfect". Its only those imperfections which we choose not to see!!

One thing I have learned in a long life: that all our science, measured against reality, is primitive and childlike -- and yet it is the most precious thing we have.

Gravity is a response to geometry.

The question that drives me hazy is whether it is I or others who is crazy.

The sole function of education...[is] to open the way to thinking and knowing, and the school, as the outstanding organ for the people's education, must serve that end exclusively.