let me say

let me (just) say

 and just let me say
a phrase introducing something that the speaker thinks is important. Rachel: Let me say how pleased we all are with your efforts. Henry: Why, thank you very much. Bob: Just let me say that we're extremely pleased with your activity. Bill: Thanks loads. I did what I could.
See also: say
References in classic literature ?
I do not wonder at your not choosing to let them wash you after the manner in which they have insulted you; I will wash your feet myself gladly enough, as Penelope has said that I am to do so; I will wash them both for Penelope's sake and for your own, for you have raised the most lively feelings of compassion in my mind; and let me say this moreover, which pray attend to; we have had all kinds of strangers in distress come here before now, but I make bold to say that no one ever yet came who was so like Ulysses in figure, voice, and feet as you are.
I will hold my tongue like a stone or a piece of iron; furthermore let me say, and lay my saying to your heart, when heaven has delivered the suitors into your hand, I will give you a list of the women in the house who have been ill-behaved, and of those who are guiltless.
You'll find us a united, simple, happy, and I think I may say respected, family--a plain table, a plain people, but a warm welcome, my dear Miss Rhoda--Rhoda, let me say, for my heart warms to you, it does really.
Let me say that, my dear fellow; I won't call it anything else, bad or good; I will simply call it NEW" And overcome with a sense of the novelty thus foreshadowed, Valentin de Bellegarde threw himself into a deep arm-chair before the fire, and, with a fixed, intense smile, seemed to read a vision of it in the flame of the logs.
For a beginning, then, let me say that Lady Arabella's letter makes clear some things which she intended-- and also some things which she did not intend.
Let me say rather, it WOULD be difficult: for, as I have shown above, Recognition by Feeling is unknown among the highest society, and to FEEL a Circle would be considered a most audacious insult.