It is the fruit that makes the tree bow low.

Bowl of Saki, by Hazrat Inayat Khan

Commentary by Pir-o-Murshid Inayat Khan:

Spiritual attainment is not a thing to be brought before people to prove that it is real, or as a show. What is real is proof in itself, what is beyond all price or value does not need to be made much of before people. What is real is real, and the precious is precious in itself: it needs no explanation, nor pleading. The greatest lesson of mysticism is to know all, gain all, attain all things and be silent. The more the disciple gains, the more humble he becomes, and when any person makes this gain a means of proving himself in any way superior to others, it is a proof that he does not really possess it. He may have a spark within himself, but the torch is not yet lighted. There is a saying among the Hindus that the tree that bears much fruit bows low. As Amir says, 'He who has lost his limited self, he it is who has attained the High Presence.' Do we not forget ourselves when we behold the vision of beauty? If we are blind to beauty we cannot see it, and then we cannot forget ourselves in the beauty and sublimity of the vision. But when we perceive the beauty of nature, we bow our head in love and admiration. As a poet said of nature, 'I cannot study you, for you are too great, you are too beautiful. The only thing left for me to do is to bow my head in prostration at your feet.' A true worshipper of God sees His presence in all forms, and thus in respecting others he respects God. It may even develop to such an extent that the true worshipper of God, the Omnipresent, walks gently on the earth, bowing in his heart even to every tree and plant, and it is then that the worshipper forms a communion with the Divine Beloved at all times.

hat tip Steve Toth