"

That's where all the trouble in life comes from. Thinking.

"

A meal should always lie lightly on the estomac," said Poirot. "It should not be so heavy as to paralyze thought.

"

Poirot," I said. "I have been thinking.""An admirable exercise my friend. Continue it.

"

Speech, so a wise old Frenchman said to me once, is an invention of man's to prevent him from thinking. It is also an infallible means of discovering ...more

"

Nobody knows what another person is thinking. They may imagine they do, but they are nearly always wrong.

"

What I think is a different matter. Maybe I think some rather curious things—but until thinking's got you somewhere it's no use talking about it.