"Anyone who has never made a mistake has never tried anything new."
- Albert Einstein

Source: Einstein, Albert. Quoted in The Quotations Page. Available Online from URL http://quotationspage.com/quote/4691.html [Downloaded 2009-09-28]

"It is the theory that decides what we can observe."
- Albert Einstein (1879 - 1955)

Source: Einstein, Albert. Quoted in The Quotations Page. Available Online from URL http://quotationspage.com/quote/4691.html [Downloaded 2009-09-28]

"Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so."
- Douglas Adams

Source: Adams, Douglas. Last Chance to See. Online from URL http://quotationspage.com/quotes/Douglas_Adams/ [Downloaded 2009-09-28].