Half the time my original theory didn't turn out to be right.

So I went back to my original theory, namely, that some character stood for a space between the words.

You have wasted almost two years trying to prove your original theory.

He developed an original theory on creativity, organization and management.

However, his idea of creative destruction was quite different from Marx's original theory.

He has a highly original theory about the primacy of the barber's in human culture.

He was the first medieval physician to propose an original theory about blood and its role in the human system.

I can now return to my original theory of last year' he wrote on Tuesday July 18, 1939.

He had got caught up in something, his original theory.

"What about your original theory that there might be trace chemicals in the water?"