"Conceptions without experience are void; experience without..." - Quote by Albert Einstein

“I never think of the future. It comes soon enough. When visiting the U.S. from Germany for a winter academic stay.”

“Creativity is seeing what others see and thinking what no one else has ever thought.”

“When I study philosophical works I feel I am swallowing something which I don't have in my mouth.”

“It seems to me the book has not just aesthetic values - the charming little clothy box of the thing, the smell of the glue, even the print, which has its own beauty. But there's something about the sensation of ink on paper that is in some sense a thing, a phenomenon rather than an epiphenomenon. I can't break the association of electric trash with the computer screen. Words on the screen give the sense of being just another passing electronic wriggle.”

“I am sure of this, that by going much alone a man will get more of a noble courage in thought and word than from all the wisdom that is in books.”

“Even great spirits have only their five-fingers' breadth of experience - just beyond it their thinking ceases and their endless empty space and stupidity begins.”

“Reasoning is compared to understanding as movement is to rest, or acquisition to possession.... Since movement always proceeds from something immovable, and ends in something at rest, hence it is that human reasoning, in the order of inquiry and discovery, proceeds from certain things absolutely understood--namely, the first principles; and, again, in the order of judgment, returns by analysis to first principles, in the light of which it examines what it has found. Now it is clear that rest and movement are not to be referred to different powers, but to one and the same.”

“Here's a Challenge: Study a complicated topic in such detail that anyone interested can nod their head and understand as you explain specific concepts within the topic.”

“No one learns as much about a subject as one who is forced to teach it.”