It has yet to be proven that intelligence has any survival value.

It has yet to be proven that intelligence has any survival value.

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.

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

I must have a prodigious quantity of mind; it takes me as much as a week sometimes to make it read more

I must have a prodigious quantity of mind; it takes me as much as a week sometimes to make it up.

Intelligence is the ability to adapt to change.

Intelligence is the ability to adapt to change.

You have to be smart. The easy days are over.

You have to be smart. The easy days are over.

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 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.

Your intellect may be confused, but your emotions will never lie to you.

Your intellect may be confused, but your emotions will never lie to you.