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Never underestimate the power of the human spirit. It can overcome the most impossible odds.
I always tell my students that it's okay to make mistakes, as long as you learn from them.
The best moments in our lives are not the passive, receptive, relaxing times… The best moments usually occur if a person’s body or mind is stretched to its limits in a voluntary effort to accomplish something difficult and worthwhile.
The discovery of stars orbiting the supermassive black hole at the galactic center was a turning point in astrophysics.