Knowledge can be acquired by a suitable and complete study, no matter what the starting point is. Only one must know how to ‘learn.’ What is nearest to us is man; and you are the nearest of all men to yourself. Begin with the study of yourself; remember the saying ‘Know thyself.
From looking at your neighbor and realizing his true significance, and that he will die, pity and compassion will arise in you for him and finally you will love him.