"Possessions, outward success, publicity, luxury - to me these have always been contemptible. I believe that a simple and unassuming manner of life is best for everyone, best for both the body and the mind."
"Any fool can know. The point is to understand."
"Imagination is everything. It is the preview of life's coming attractions."
"Science without religion is lame, religion without science is blind."
"We know from daily life that we exist for other people first of all, for whose smiles and well-being our own happiness depends."
"You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat."