“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.”

“To fear the foe, since fear oppresseth strength,Gives, in your weakness, strength unto your foe,And so your follies fight against yourself.Fear, and be slain--so worse can come to fight;And fight and die is death destroying death,Where fearing dying pays death servile breath.”

“You must not thinkThat we are made of stuff so fat and dullThat we can let our beard be shook with dangerAnd think it pastime.”

“Doubt is a thief that often makes us fear to tread where we might have won.”