"If you never try, you'll never know what you are capable of"

This quote by John Barrow encourages people to step out of their convenience zones and take risks in order to genuinely find their potential. It suggests that the worry of failure and the reluctance to step outside of one's established borders can impede one's ability to reach brand-new heights and gain a deeper understanding of themselves. By motivating people to attempt new things, handle obstacles, and push their borders, Barrow is firmly insisting that the only way to genuinely know what one is capable of is to accept unpredictability and take calculated risks. In essence, the quote urges individuals to think in themselves and their abilities, and to not let fear hold them back from their true potential.