A human being is a part of the whole, called by us universe, a part limited in time and space. One experiences oneself, one's thoughts and feeling as something separate from the rest - a kind of optical delusion of one's consciousness.
- Albert Einstein, a German-born theoretical physicist, widely held to be one of the greatest and most influential scientists of all time
The existing scientific concepts cover always only a very limited part of reality, and the other part that has not yet been understood is infinite.
- Werner Heisenberg, Nobel Prize-winning physicist