I will tell you my rule. Talk about those subjects you have had long in your mind, and listen to what others say about subjects you have studied but recently. Knowledge and timber shouldn’t be much used till they are seasoned.

Oliver Wendell Holmes, Sr. (1809-1894) American poet, essayist, scholar

Article (1858-04), “Autocrat of the Breakfast-Table,” Atlantic Monthly
    (Source)

Collected in Autocrat of the Breakfast-Table, ch. 6 (1858).