The infinite library of the Universe is in your mind.

Ambition never is in a greater hurry that I; it merely keeps pace with circumstances and with my general way of thinking.

The brain can be developed just the same as the muscles can be developed, if on will only take the pains to trainthe mind to think.

Let us consider, first, the need for a tough mind, characterized by incisive thinking, realistic appraisal, and decisive judgment. The tough mind is sharp and penetrating, breaking through the crust of legends and myths and sifting the true from the false.

Never waste a minute thinking about people you don't like.

It's not like I idolize this one guy Machiavelli. I idolize that type of thinking where you do whatever's gonna make you achieve your goal.