To all those who lead monotonous lives in the hope that they may experience at second hand the delights and dangers of adventure. [author's dedication]
Our weapon is our knowledge. But remember, it may be a knowledge we may not know that we possess.
They tried to be too clever---and that was their undoing.
You cannot mix up sentiment and reason.
A weak man in a corner is more dangerous than a strong man.
The human mind prefers to be spoon-fed with the thoughts of others, but deprived of such nourishment it will, reluctantly, begin to think for itself - and such thinking, remember, is original thinking and may have valuable results.