The question isn't who is going to let me; it's who is going to stop me.

Ayn Rand

You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals.

Booker T. Washington

Fight for your dreams, and your dreams will fight for you.

Paulo Coelho

Don't give up. Don't ever give up.

Jim Valvano

Never give up work. Work gives you meaning and purpose and life is empty without it.

Stephen Hawking

You are never so alive as when learning something new and overcoming adversity.

Bruce Dickinson