Whoever does not believe in all humility that his wisdom is the sum of all wisdom – that his judgement represents the highest judgement – will soon be able to observe that there are people apart from himself who have more wisdom and judgement [than himself], and he will listen to these beings and allow himself to be instructed by them. He will, when he gains some insight, become aware that he still has a path to follow that others have gone long before him. The more understanding a person obtains, the humbler he becomes. The clearer the realisation how much he still has to learn, the more he will be inclined to find those he can still learn from.
Anyone who thinks that he has nothing to learn from others only proves thereby that he or she has still not advanced very far. The more advanced a person is, the more he comes to recognise that human beings are on different levels of development and that there have always been those who were more advanced than their brethren – the spiritual leaders of humanity who are more advanced in their development, the highly developed, the most advanced individualities of humankind.
Source (German): Rudolf Steiner – GA 264 – Zur Geschichte und aus den Inhalten der ersten Abteilung der Esoterischen Schule 1904–1914 (page 353-354)
Translated by Nesta Carsten-Krüger