The rationale for loving others is the recognition of the simple fact that every living being has the same right to and the same desire for happiness, and not suffering, and the consideration that you as one individual are one life unit as compared with the mulititude of others in their ceaseless quest for happiness.
Benevolence does not consist in those who are prosperous pitying and helping those who are not. It consists in fellow feeling that puts you upon actually the same level with the fellow who suffers.
Temporal punishments are suffered by some in this life only, by some after death, by some both here and hereafter, but all of them before that last and strictest judgment. But not all who suffer temporal punishments after death will come to eternal punishments, which are to follow after that judgment.
We are made weak both by idleness and distrust of ourselves. Unfortunate, indeed, is he who suffers from both. If he is a mere individual he becomes nothing; if he is a king he is lost.