All intelligent thoughts have already been thought; what is necessary is only to try to think them again.
Johann Wolfgang von Goethe
I was born intelligent, education ruined me.
Samuel Langhorne Clemens
What any woman saw in some particular man was beyond the comprehension of the average intelligent male. It just was so. A woman who could be intelligent about everything else in the world could be a complete fool when it came to some particular man.
Dame Agatha Mary Clarissa Christie
Intelligent discontent is the mainspring of civilization. Progress is born of agitation. It is agitation or stagnation.
Eugene Debs
Man [has] always assumed that he was more intelligent than dolphins because he had achieved so much-the wheel, New York, wars and so on-while all the dolphins had ever done was muck about in the water having a good time. But conversely, the dolphins had always believed that they were far more intelligent than man-for precisely the same reason.
Douglas Adams
Luck, bad if not good, will always be with us. But it has a way of favoring the intelligent and showing its back to the stupid.
John Dewey
An intelligent person is never afraid or ashamed to find errors in his understanding of things.
Bryant H. McGill
It is not the strongest of the species that survives, nor the most intelligent. It is the one that is the most adaptable to change.
Charles Galton Darwin
It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change.
Charles Darwin
Each atom of the Holy Spirit is intelligent, and like all other matter has solidity, form, and size, and occupies space.
Orson Pratt
To laugh often and much; to win the respect of intelligent people and the affection of children...to leave the world a better place...to know even one life has breathed easier because you have lived. This is to have succeeded.
Ralph Waldo Emerson
The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.
Bill Watterson
An intelligent, energetic, educated woman cannot be kept in four walls even satin-lined, diamond-studded walls without discovering sooner or later that they are still a prison cell.
Pearl Sydenstricker Buck