Easy question: Clarke's Law

Cafe Society
1

Arthur C. Clarke is credited with formulating this maxim:

Any sufficiently developed technology is indistinguishable from magic.

But in which book or article did he first write this?

2

I believe it may have appeared in the compendium;

“Tale from the White Hart.”

3

http://www-users.cs.york.ac.uk/~susan/cyc/l/law.htm

Arthur C. Clarke. “Technology and the Future”. Report on Planet Three. 1972

4

That would be, “Tales …”

5

Thanks for the replies, everyone!