I never know how to give advice to a writer because there's so much you could say, and it's hard to translate your own experience. But of course, I always try. The main thing that I usually end up saying is to read a lot. To read a great deal and to learn from that.
“A fact never went into partnership with a miracle. Truth scorns the assistance of wonders. A fact will fit every other fact in the universe, and that is how you can tell whether it is or is not a fact. A lie will not fit anything except another lie.”
“When it is not in our power to follow what is true, we ought to follow what is most probable.”