- Do you suppose they even know what a microbe is?
- I doubt it. Some of them may have heard the word, but I expect they think it's a sort of fly.

— Dr Knock (Robert Morley)

8 seconds sound clip from the Dr Knock (Theatre Royal 1954) classic radio drama series episode.

You can hear this line at 00:10:30.844 in the radio play.

Quote context

[...]

- But my dear sir, as a schoolmaster of this town, you really ought to face up to your responsibilities. Teaching people here the laws of health...

- Setting up the right standards of household hygiene, of good heavens, the hundred and one things a doctor and a schoolmaster can only do if they do them together.

- But Doctor Parpalaid never told me. Doctor Knock never once suggested...

- Good heavens, to think of these wretched people left to their own devices, hygienically, prophylactically.

- They certainly are.

- I'll wager they drink the water here and never give a thought to the billions of bacteria in every mouthful.

- No, I'm sure they don't.

- Do you suppose they even know what a microbe is?

- I doubt it. Some of them may have heard the word, but I expect they think it's a sort of fly.

- Terrible, terrible.

- Well, it'll naturally take a little time now to destroy this fool's paradise, but we must do our best, you and I. We must do our best.

- Oh, I'm quite willing. I only fear I shan't be of much help.

- Somebody who knows you very well tells me that you have one serious fault. You are too modest.

[...]