Both [fear and hope] are mainly due to projecting our thoughts far ahead of us instead of adapting ourselves to the present.
Foresight, the greatest blessing humanity has been given, is transformed into a curse. Wild animals run from the dangers trey actually see, and once they have escaped them worry no more. We however are tormented aloke by what is past and what is to come. A number of our blessings do us harm, for memory brings back the agony of fear while foresight brings it on prematurely. No one confines his unhapiness to the present.