“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.”

“Call me what instrument you will, though you can fret me, you cannot play upon me.”

“Give me that man that is not passion's slave, and I will wear him in my heart's core, in my heart of heart, as I do thee.”

“An two men ride of a horse, one must ride behind.”