A quote
We can formulate general rules and commit them to writing, as to what is usually done, or ought to be done; such advice may be given, not only to our absent friends, but also to succeeding generations. In regard, however, to that second question,—when or how your plan is to be carried out,—no one will advise at long range; we must take counsel in the presence of the actual situation.
Seneca·Letter 22 — On the Futility of Half-way Measures (§2)·trans. Gummere