Aspirants can cultivate curiosity as part of their UPSC preparation by exploring subjects outside their syllabus. Engaging with current affairs, reading extensively, and participating in discussions can spur interest in diverse topics. Following credible news sources, listening to expert podcasts, and visiting museums or cultural events can also broaden perspectives. Being open to asking questions and seeking answers fosters a lifelong learning attitude, critical for UPSC preparation. This inquisitive mindset will not only help in retaining information but also in developing analytical thinking, essential for the examination.