"Wisdom sets bounds even to knowledge...." - Quote by Friedrich Nietzsche

“Be careful who you choose as your enemy because that's who you become most like.”

“Be your self! All you are now doing, thinking, desiring, is not you yourself.”

“And if you are not a bird, then beware of coming to rest above an abyss.”

“Wisdom is not the purchase of a day”

“The Wise Man is square but not sharp, honest but not not malign, straight but not severe, bright but not dazzling.”

“Search for the seed of good in every adversity. Master that principle and you will own a precious shield that will guard you well through all the darkest valleys you must traverse. Stars may be seen from the bottom of a deep well, when they cannot be discerned from the mountaintop. So will you learn things in adversity that you would never have discovered without trouble. There is always a seed of good. Find it and prosper.”

“An ounce of heart knowledge is worth a ton of head learning.”

“All the efforts of the human mind cannot exhaust the essence of a single fly.”

“I assert that, in any particular natural science, one encounters genuine scientific substance only to the extent that mathematics is present.”