This quote is a reflection on the marvels of human consciousness. It contrasts the two components of our conscious experience: thought and sensation. Thought refers to our cognitive processes, our ability to reason, imagine, and remember. Sensation, on the other hand, refers to our perceptual experiences, the raw data we receive from our senses like sight, hearing, taste, touch, and smell.

In essence, Voltaire is expressing amazement at the complexity and wonder of both these aspects of our consciousness. We are often amazed by our ability to think, to form complex ideas and theories, to solve problems and create. But sensation, the simple act of experiencing the world around us, is equally amazing. The ability to see colors, to hear sounds, to taste flavors, to touch and feel textures, these are all remarkable in their own right.

Applying this idea to today’s world or personal development, it’s a reminder to appreciate both our intellectual and sensory experiences. In a world that often values intellect over sensation, it’s easy to overlook the importance and wonder of our sensory experiences. But our senses are our primary connection to the world around us. They provide the raw data that our brains interpret and understand.

In terms of personal development, this quote could inspire us to cultivate both our cognitive and sensory abilities. This could mean challenging our minds with complex problems and new ideas, but also taking the time to truly experience the world around us, to savor the taste of our food, to appreciate the beauty of a sunset, to listen to the sounds of nature. It’s about developing a balanced awareness and appreciation of both thought and sensation.