“Your sacred contribution in the world is the service to humanity.”

“Guide us in the path of peace, O Lord!”

“Work while you have strength.”

“Do all the work you can while you still have strength.”

“Do all the work you can, while there is grace of strength.”

“Thank God for the strength to work.”

“One thorn of experience is worth a whole wilderness of warning.”

“Generally speaking, a howling wilderness does not howl: it is the imagination of the traveler that does the howling.”

“To plunder, to slaughter, to steal, these things they misname empire; and where they make a wilderness, they call it peace.”

“The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives.”

“[I]sn't it sad to go to your grave without ever wondering why you were born? Who, with such a thought, would not spring from bed, eager to resume discovering the world and rejoicing to be part of it?”

“I have not yet lost a feeling of wonder, and of delight, that the delicate motion should reside in all the things around us, revealing itself only to him who looks for it.”