Heart-based meditation only gives one ecstasy. It cannot give one intellectual food. Intellectual development can happen only through thinking. My spirituality is mind-based, due to which I make new discoveries. For example, today I realized that God had provided sunlight for us too see and work in daytime. But in the night when the sun has set, we use electricity as a source of light. So God knew that people would require light when the sun has set and so He kept the potential of electricity in nature. Thus I realized that there's great planning in nature. Thinking in this way helps me discover God's glory.
