Are philosophy cards intended to stay out for multiple rounds?

Philosophy is just a trait. Traits themselves mean nothing on their own, but other cards may trigger on them (See, Courtier, Bushi, Monk, Spell, Imperial, etc). Currently, nothing uses the philosophy trait.

All events will do an effect and then are discarded. There is no permanence outside of its effect.

For example, Way of the Crane honors a crane character. The honoring effect is permanent (lasts until something else changes it) but the card itself is one time use.

Thanks, was confused by the text on the bottom of the cards saying (Max once per round). Now I see that means only play one of that card each round.

11 minutes ago, Torkblade said:

Thanks, was confused by the text on the bottom of the cards saying (Max once per round). Now I see that means only play one of that card each round.

Correct.