I can't tell you if genius is hereditary, because heaven has granted me no offspring.

I can't tell you if genius is hereditary, because heaven has granted me no offspring.

It is the mark of a truly intelligent person to be moved by statistics.

It is the mark of a truly intelligent person to be moved by statistics.

Continuous effort - not strength or intelligence - is the key to unlocking our potential

Continuous effort - not strength or intelligence - is the key to unlocking our potential

What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average read more

What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.

I not only use all the brains that I have, but all that I can borrow.

I not only use all the brains that I have, but all that I can borrow.

Mad, adj.: Affected with a high degree of intellectual independence.

Mad, adj.: Affected with a high degree of intellectual independence.

All intelligent thoughts have already been thought; what is necessary is only to try to think them again.

All intelligent thoughts have already been thought; what is necessary is only to try to think them again.

I'm not offended by all the dumb blonde jokes because I know I'm not dumb... and I also know that read more

I'm not offended by all the dumb blonde jokes because I know I'm not dumb... and I also know that I'm not blonde.

To educate the intelligence is to expand the horizon of its wants and desires.

To educate the intelligence is to expand the horizon of its wants and desires.