Study with regularity, at settled hours. Those in the forenoon (morning) are the best, if they can be secured. The man who has acquired the habit of study, though for only one hour every day in the year, and keeps to the one thing studied till it is mastered, will be startled to see the way he has made at the end of a twelvemonth.
. . .
In learning what others have thought, it is well to keep in practice the power to think for one’s self: when an author has added to your knowledge, pause and consider if you can add nothing to his.
Bulwer-Lytton, Edward. “Readers and Writers.” Blackwood’s Magazine 1863. Kindle.