"Con las ideas es como con las alturas vertiginosas que escalas: al principio te causan malestar y estás ansioso por bajar, desconfiando de tus propias fuerzas; pero pronto la lejanía del tumulto de la vida y la influencia inspiradora de la altitud calman t"

Simplified Meaning:

When you start thinking about new and big ideas, it can feel scary and uncomfortable at first, much like when you start climbing a tall mountain. At the beginning, you might feel unsure of yourself and afraid of failing. However, as you get used to being in this new and challenging place, things start to feel more manageable and even exciting. Just like reaching a high point on a mountain, you start to feel calmer and more confident the longer you are there. Eventually, you not only get comfortable but also want to explore even higher and greater challenges. Imagine learning to ride a bicycle for the first time. Initially, it's frightening, and you might want to give up because you're worried you'll fall. But with practice, you start to gain balance and control, and soon enough, riding becomes enjoyable and second nature. Eventually, you might even seek out tougher terrains to ride on, looking for new adventures. This idea suggests that with time and persistence, what once seemed difficult can become a source of strength and eagerness for more challenges.