Assent is also called Stoic mindfulness. We make choices about which experiences we accept and reject. Knowing what lessons are to be drawn is related to prudence. It is therefore dependent upon logic. Assent also governs opinion. If I believe something, I am giving assent to it. But if I believe things without sufficient evidence, I am imprudent with respect to my opinions. And perhaps the most important beliefs I have concern the nature of the cosmos as a whole and my place within it.