"Gutenberg and Richter were very great men."

"It's a difficult question of relations between people."

"You travel across the country, you visit departments, you give talks, you talk about the work at your laboratory - what's going on, what the opportunities are there - you talk about your own research."

"When the first computers started to come in, we tried to digitalize the seismological equipment."

"For my own personal growth I had to set out on my own."

"My attitude toward graduate students was different, I must say. I used graduate students as colleagues: I gave them the best problems to work on, and I encouraged them."