He [Bloch] was one of those touchy, highly-strung people who cannot bear to have made a blunder, will not admit it to themselves, and whose whole day is ruined by it.

I had come in time to learn that it was a mistake to smile a friendly smile when somebody made a fool of me.

Let but a single flash of reality -- the glimpse of a woman from afar or from behind -- enable us to project the image of Beauty before our eyes, and we imagine that we have recognised it, our hearts beat, and we will always remain half-persuaded that it was She, provided that the woman has vanished: it is only if we manage to overtake her that we realise our mistake.

Medicine being a compendium of the successive and contradictory mistakes of medical practitioners, when we summon the wisest of them to our aid, the chances are that we may be relying on a scientific truth the error of which will be recognized in a few years time.