Osho (Bhagwan Shree Rajneesh). Zarathustra: the way of ascent (№ 379936)

If someone says something with which you deeply disagree that deeply harmoniously... you can say "Yes" but let your ' Yes ' will be absolute; if something inside you wants to say Yes, it is better to say "no." This is one of the foundations of life: only person able to say "no", may say "Yes". If you can't say no, your Yes is powerless; it means nothing, it has no power.