For, after all, how do we know that two and two make four? Or that the force of gravity works? Or that the past is unchangeable? If both the past and the external world exist only in the mind, and if the mind itself is controllable – what then?
Create all the happiness you are able to create; remove all the misery you are able to remove. Every day will allow you, --will invite you to add something to the pleasure of others, --or to diminish something of their pains.