What does Tagore mean by "there are no traces of birds in the sky, but I flew by"?

"There are no traces of birds in the sky, but I flew over" means: although I didn't succeed (or I didn't leave any glory), at least I tried, tried.

In the eyes of many of us, Tagore is a poet, but rarely regarded as a philosopher, but in India, the two are often the same. There are profound philosophies in his poems.

There is no trace of birds in the sky, but I have flown. In such a noisy city, birds met my heart. I'm glad to find this quiet place in the noisy city. Birds brought me the washing of my soul, the blooming of flower of life, and a vivid and beautiful dream.

At this moment, I realized that Tagore's Birds is a philosophical paradise, an ingenious garden, a beautiful poem like a cloud, and the gardener is Tagore. He cultivated this holy land with his beautiful thoughts and an ordinary pen.

Tagore is very good at combining the thinking in images with the thinking in logic. Generally speaking, thinking in images emphasizes the direct feelings of the five senses; And logical thinking needs to deal with piecemeal analysis rationally. If the whole article is an intuitive description, literary creation will become superficial; And if you keep a straight face and tell people everything, philosophy will appear cold and dull.