I would argue that passion is more important than brain power.

Our talents are living things, we give birth to them, nourish them till they grow and become immortal.

Your mental problem becomes a solution when it can be used to solve problems.

This is peculiarly an age in which each of us may, if he do but search diligently, find the literature suited to his mental powers.

Creativity is not intelligence, it is the ability to do what you did not know through the use of what you know.