“Whoever despises the high wisdom of mathematics nourishes himself on delusion and will never still the sophistic sciences whose only product is an eternal uproar.”

“A diamond is just a lump of coal that stuck to its job.”

“Make your work to be in keeping with your purpose”

“Nature is constrained by the cause of her laws which dwell inborn in her. Variant: Nature is constrained by the order of her own law which lives and works within her.”

“Every obstacle is destroyed through rigor.”

“Life too near paralyses art.”

“If I could put my hand on the north star, would it be as beautiful? The sea is lovely, but when we bathe in it the beauty forsakesall the near water. For the imagination and senses cannot be gratified at the same time.”

“The hues of the opal, the light of the diamond, are not to be seen if the eye is too near.”