The task which we have set ourselves is simply to show why and for what purpose we hold that standpoint during most of our lives, and why and for what purpose we are provisionally obliged to abandon it. Ernst Mach
What is my ruling faculty now to me? and of what nature am I now making it? and for what purpose am I now using it? is it void of understanding? is it loosed and rent asunder from social life? is it melted and mixed with the poor flesh so as to move together with it? Marcus Aurelius
How strange is the lot of us mortals! Each of us is here for a brief sojourn; for what purpose he knows not, though he sometimes thinks he senses it. Albert Einstein
For what purpose then, has this enormous territory been committed to England? .... that every man, woman and child from Cape Comorin ot the Himalaya mountains, may be elevated, enlightened, Christianised. Monier Monier-Williams