People who say it cannot be done should not interrupt those who are doing it.

Nothing is more dangerous than a poor doctor: not even a poor employer or a poor landlord.

The notion that Nature does not proceed by jumps is only one of the budget of plausible lies that we call classical education. Nature always proceeds by jumps. She may spend twenty thousand years making up her mind to jump; but when she makes it up at last, the jump is big enough to take us into a new age.

Whenever I see the word Operation, especially Trifling Operation, I at once write off the patient as dead.

An asylum for the sane would be empty in America.

A man of genius is not a man who sees more than other men do. On the contrary, it is very often found that he is absentminded andobserves much less than other people.... Why is it that the public have such an exaggerated respect for him--after he is dead? The reason is that the man of genius understands the importance of the few things he sees.

This planet is obviously being used as an insane asylum by other planets.