If a weakly mortal is to do anything in the world besides eat the bread thereof there must be a determined subordination of the whole nature to the one aim no trifling with time which is passing with strength which is only too limited.
It is no use painting the foot of the tree white the strength of the bark cries out from beneath the paint.
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Tonight I should like to thank all those who have shared my work and to acknowledge the debt that I owe to my wife whose encouragement to put research before all other things has been a great strength to me.
