"Learning never exhausts the mind...." - Quote by Leonardo Da Vinci

“Nature is the source of all true knowledge. She has her own logic, her own laws, she has no effect without cause nor invention without necessity.”

“Given the cause nature produces the effect in the briefest manner that it can employ.”

“You will never have a greater or lesser dominion than that over yourself.”

“I have made the mistaken assumption - and I will attempt to be better at this - of thinking that because somebody is on Twitter and is attacking me that it is open season. And that is my mistake.”

“The only thing worse than not reading a book in the last ninety days is not reading a book in the last ninety days and thinking that it doesn't matter”

“learning 's a gift, even when "pain" ,s your teacher!”

“The greatest invention in the world is the mind of a child.”

“Reality exists in the human mind, and nowhere else. Not in the individual mind, which can make mistakes, and in any case soon perishes: only in the mind of the Party, which is collective and immortal.”

“Man's duty is to improve himself; to cultivate his mind; and, when he finds himself going astray, to bring the moral law to bear upon himself.”