Circumstances rule men; men do not rule circumstances.

The biggest risk is not taking any risk. In a world that is changing quickly, the only strategy that is guaranteed to fail is not taking risks.

Mathematics is not just about numbers and equations; it's about understanding the patterns and structures that underlie everything in the universe.

Every life is in many days, day after day. We walk through ourselves, meeting robbers, ghosts, giants, old men, young men, wives, widows, brothers-in-love, but always meeting ourselves.

Leadership is not about being in charge. It's about taking care of those in your charge.