First... a new theory is ...

First... a new theory is attacked as absurd; then it is admitted to be true, but obvious and insignificant; finally it is seen to be so important that its adversaries claim that they themselves discovered it.
First... a new theory is attacked as absurd; then it is admitted to be true, but obvious and insignificant; finally it is seen to be so important that its adversaries claim that they themselves discovered it.

Quotes from the same author

Most people never run far enough on their first wind to find out they've got a second.
To change one's life, start immediately, do it flamboyantly, no exceptions.
The greatest discovery of our generation is that human beings can alter their lives by altering their attitudes of mind. As you think, so shall you be.
The deepest craving of human nature is the need to be appreciated.
Pretend what we may, the whole man within us is at work when we form our philosophical opinions.