To rush into explanations and excuses is always a sign of weakness.
The best way to explain it is to do it.
No, no! The adventures first, explanations take such a dreadful time.[said the Gryphon in an impatient tone]
If you can’t understand it without an explanation, you can’t understand it with an explanation.
I can’t explain myself, I’m afraid, Sir, because I’m not myself, you see.
Explanations are such cheap poetry.