I was from a poor Jewish family in the South Bronx. My father was a plumber, but when I was 16, he got sick and I had to take over. Being a plumber i…

- Leonard Susskind

Unforeseen surprises are the rule in science, not the exception. Remember: Stuff happens.

- Leonard Susskind

Science blogs bore me. When everyone is an expert, no one is an expert.

- Leonard Susskind

There is a philosophy that says that if something is unobservable -- unobservable in principle -- it is not part of science. If there is no way to fa…

- Leonard Susskind

[Richard Feynman] truly believed that if you couldn't explain something simply, you didn't understand it.

- Leonard Susskind

You have to say now that space is something. Space can vibrate, space can fluctuate, space can be quantum mechanical, but what the devil is it?

- Leonard Susskind

I did not come from an academic background. My father was a smart man, but he had a fifth-grade education. He and all his friends were plumbers. They…

- Leonard Susskind

We often say that the earth is a sphere, but to be precise, the term sphere refers only to the surface. The correct mathematical term for the solid e…

- Leonard Susskind

I'm afraid I am a bit of a technophobe - a nineteenth-century man caught in the twenty-first century. But there is one piece of technology that I wou…

- Leonard Susskind