“Never lose a holy curiosity.”

“It is, in fact, nothing short of a miracle that the modern methods of instruction have not yet entirely strangled the holy curiosity of inquiry; for this delicate little plant, aside from stimulation, stands mainly in need of freedom. Without this it goes to wrack and ruin without fail.”

“Curiosity is more important than knowledge.”

“It is a miracle that curiosity survives formal education.”

“The important thing is not to stop questioning. Curiosity has its own reason for existing.”

“I know quite certainly that I myself have no special talent; curiosity, obsession and dogged endurance, combined with self-criticism, have brought me to my ideas.”

“Anyone who has never made a mistake has never tried anything new.”