Quote by William Osler
No bubble is so iridescent or floats longer than that blown by the successful teacher.

Summary
This quote suggests that the impact and influence of a successful teacher on their students is unparalleled and long-lasting. Just like an iridescent bubble that catches the attention and fascination of onlookers, a successful teacher captivates and inspires their students. Furthermore, the reference to the bubble floating longer highlights the enduring effect of a great teacher's teachings, as their knowledge and guidance continue to resonate with students throughout their lives.