Insanity is doing the same thing, over and over again, but expecting different results.
The difference between genius and stupidity is: genius has its limits.
Creativity is knowing how to hide your sources
A clever person solves a problem. A wise person avoids it.
Chance is perhaps the pseudonym of God when he does not want to sign.
In theory, there is no difference between theory and practice. But in practice, there is.
If you are out to describe the truth, leave elegance to the tailor.
A little Learning is a dangerous Thing.
If the bee disappeared off the face of the earth, man would only have four years left to live.