Always dream and shoot higher than you know you can do. Don't bother just to be better than your contemporaries or predecessors. Try to be better than yourself.
Bio: Abū Bakr 'Abdallāh bin Abī Quḥāfah aṣ-Ṣiddīq, popularly known as Abu Bakr, was a senior companion and through his daughter Aisha the father-in-law of the Islamic prophet Muhammad.
