It is an unfortunate fact that every man who seeks to disseminate knowledge must contend not only against ignorance itself, but against false instruction as well. No sooner do we deem ourselves free from a particularly gross superstition, than we are confronted by some enemy to learning who would set aside all the intellectual progress of years, and plunge us back into the darkness of mediaeval disbelief.

The oldest and strongest emotion of mankind is fear, and the oldest and strongest kind of fear is fear of the unknown

Sometimes one feels that it would be merciful to tear down these houses, for they must often dream.

I have harnessed the shadows that stride from world to world to sow death and madness.

The sea can bind us to her many moods, whispering to us by the subtle token of a shadow or a gleam upon the waves, and hinting in these ways of her mournfulness or rejoicing. Always she is remembering old things, and these memories, though we may not grasp them, are imparted to us, so that we share her gaiety or remorse.

It is good to be a cynic - it is better to be a contented cat - and it is best not to exist at all.

An isolated person requires correspondence as a means of seeing his ideas as others see them, and thus guarding against the dogmatisms and extravagances of solitary and uncorrected speculation. No man can learn to reason and appraise from a mere perusal of the writing of others. If he live not in the world, where he can observe the public at first hand and be directed toward solid reality by the force of conversation and spoken debate, then he must sharpen his discrimination and regulate his perceptive balance by an equivalent exchange of ideas in epistolary form.