Suspicions that the mind, of itself, gathers, are but buzzes; but suspicions that are artificially nourished and put into men's heads by the tales and whisperings of others, have stings.
The medical profession (is) a conspiracy to hide its own shortcomings. No doubt the same may be said of all professions. They are all conspiracies against the laity... (U)ntil there is a practicable alternative to blind trust in the doctor, the truth about the doctor is so terrible that we dare not face it.
A lui la foi, a' elle le doute, a' elle le fardeau le plus lourd: la femme ne souffre-t-elle pas toujours pour deux? For him, faith; for her, doubt and for her theheavier load: does not the woman always suffer for both?
If a parricide is more wicked than anyone who commits homicide-because he kills not merely a man but a near relative-without doubt worse still is he who kills himself, because there is none nearer to a man than himself.
Don't imagine that you'll discover {the truth} by accumulating more knowledge. Knowledge creates doubt, and doubt makes you ravenous for more knowledge. You can't get full eating this way.
The probability that we face global warming caused by fossil fuels is now so overwhelming that it is legitimate to doubt the motives of those who deny it
When in doubt, tell the truth. That maxim I did invent, but never expected it to be applied to me. I did say, "When you are in doubt," but when I am in doubt myself I use more sagacity.
There is no doubt in my mind when history was written, the final page will say: 'Victory was achieved by the United States of America for the good of the world.'