A man's face as a rule says more, and more interesting things, than his mouth, for it is a compendium of everything his mouth will ever say, in that it is the monogram of all this man's thoughts and aspirations.Arthur Schopenhauer
Wicked thoughts and worthless efforts gradually set their mark on the face, especially the eyes.Arthur Schopenhauer
Reading is equivalent to thinking with someone else's head instead of with one's own.Arthur Schopenhauer
The smallest flower is a thought, a life answering to some feature of the Great Whole, of whom they have a persistent intuition.Honoré de Balzac
Thought is a key to all treasures; the miser's gains are ours without his cares. Thus I have soared above this world, where my enjoyment have been intellectual joys.Honoré de Balzac
The most complicated achievements of thought are possible without the assistance of consciousness.Sigmund Freud
The voice of the intellect is a soft one, but it does not rest until it has gained a hearing.Sigmund Freud
I've spent quality time in the aerospace community, with my service on two presidential commissions, but at heart, I'm an academic. Being an academic means I don't wield power over person, place or thing. I don't command armies; I don't lead labor unions. All I have is the power of thought.Neil deGrasse Tyson