The surest sign that intelligent life exists elsew...

Things are never quite as scary when you've got a best friend.

Letting your mind play is the best way to solve problems.

Shutting off the thought process is not rejuvenating the mind is like a car battery - it recharges by running.

Taste is the fundamental quality which sums up all the other qualities. It is the nec plus ultra of the intelligence. Through this alone is genius the supreme health and balance of all the faculties.

The voice of the intelligence is drowned out by the roar of fear. It is ignored by the voice of desire. It is contradicted by the voice of shame. It is biased by hate and extinguished by anger. Most of all it is silenced by ignorance.

Sculpture is the art of the intelligence.

Americans have always had an ambivalent attitude toward intelligence. When they feel threatened, they want a lot of it, and when they don't, they regard the whole thing as somewhat immoral.

Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young.

There is a fountain of youth: it is your mind, your talents, the creativity you bring to your life and the lives of people you love. When you learn to tap this source, you will truly have defeated age.

Life would be infinitely happier if we could only be born at the age of eighty and gradually approach eighteen.

Probably the happiest period in life most frequently is in middle age, when the eager passions of youth are cooled, and the infirmities of age not yet begun as we see that the shadows, which are at morning and evening so large, almost entirely disappear at midday.