Don't measure yourself by what you have accomplished, but what you should have accomplished with your ability.

Don't measure yourself by what you have accomplished, but by what you should have accomplished with your ability.

Ability may get you to the top, but it takes character to keep you there.

Ability is a poor man's wealth.

Almost every measure of education, or cognitive ability, or talent is now associated with a higher income. All this is raising the incentives for people to invest in education, training, and in attaining new skills.

We measure the excellency of other men by some excellency we conceive to be in ourselves