The compassion we feel normally is biased and mixed with attachment. Genuine compassion flows towards all living beings, particularly your enemies. If I try to develop compassion towards my enemy, it may not benefit him directly, he may not even be aware of it. But it will immediately benefit me by calming my mind. On the other hand, if I dwell on how awful everything is, I immediately lose my peace of mind.
Those who have compassion when they do battle will be victorious. Those who likewise defend themselves will be safe. Heaven will rescue and protect them with compassion.
Let us have compassion for those under chastisement. Alas, who are we ourselves? Who am I and who are you? Whence do we come and is it quite certain that we did nothing before we were born? This earth is not without some resemblance to a gaol. Who knows but that man is a victim of divine justice? Look closely at life. It is so constituted that one senses punishment everywhere.
The wounded surgeon plies the steel
That questions the distempered part;
Beneath the bleeding hands we feel
The sharp compassion of the healer's art
Resolving the enigma of the fever chart.
Without religion, also there is a way, it could be this way, through education, through scientific findings, then you get conviction. Not necessarily really love other, but for their own interest they are showing love, compassion to other like that.
A human being is a part of the whole called by us universe; a part limited in time and space. He experiences himself, his thoughts, and his feelings as something separate from the rest - a kind of optical delusion of consciousness.
An important distinction can be made between religion and spirituality. Religion [is] concerned with faith in the claims to salvation of one faith tradition... Spirituality is concerned with qualities of the human spirit, love and compassion, patience, tolerance, forgiveness, contentment, a sense of responsibility, a sense of harmony, that bring happiness both to self.