Mathematics has a threefold purpose. It must provide an instrument for the study of nature. But this is not all: it has a philosophical purpose, and, I daresay, an aesthetic purpose. — Henri Poincare Copy Share Image
I state the threefold purpose of my travels in Arabia: to see the country, to write about it and to be of some service to its people and their cause - that is what brought me from beyond the seas,… — Ameen Rihani Copy Share Image
