Plans are worthless, but planning is everything. He understood that you had to plan and anticipate and imagine every contingency. And yet, he also understood fundamentally this other Stoic idea, which is there some things in our control and some things aren't.
You might also like
Somehow the despondency thus treated becomes pregnant with an access to new vitality. The organism needs to lie dormant whilst its latent energies are gathering strength for activity on a fresh plane. It is important, moreover, to observe that, so long as there is growth, the fresh plane is likewise a higher plane.
Robert Ranulph Marett
The multitude of men agree in this: that they equate thinking with reading, and spare themselves the trouble of thinking, because they are able to read. They thus very much resemble those who to escape from want have sold their heritage, and now hope to live by their wages from those who have acquired it.
Arthur Schopenhauer — Parerga and Paralipomena
The world is not to be put in order; the world is order, incarnate. It is for us to harmonize with this order.
Henry Miller — Big Sur and the Oranges of Hieronymus Bosch