Nothing is less predictable than the development of an active scientific field.

Remembrance is the only paradise out of which we cannot be driven away.

If one introduces the concept of energy of an earthquake then that is a theoretically derived quantity.

In every area of the world where there is earthquake risk, there are still many buildings of this type; it is very frustrating to try to get rid of them.

Don't wait for extraordinary circumstance to do good; try to use ordinary situations.

It is a common remark that men talk most who think least; just as frogs cease their quacking when a light is brought to the water-side.

I would walk - not run - to the nearest seismograph.