If in the following pages I seem to express myself dogmatically, it is only because I find it very boring to qualify every phrase with an ‘I think’ or ‘to my mind.’ Everything I say is merely an Opinion of my own. The reader can take it or leave it. If he has the patience to read what follows he will see that there is only one thing about which I am certain, and this is that there is very little about which one can be certain.

W. Somerset Maugham (1874-1965) English novelist and playwright [William Somerset Maugham]

The Summing Up, ch. 5 (1938)
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