यं हि न व्यथयन्त्येते पुरुषं पुरुषर्षभ ।समदुःखसुखं धीरं सोऽमृतत्वाय कल्पते ॥
yaṃ hi na vyathayantyete puruṣaṃ puruṣarṣabhasamaduḥkhasukhaṃ dhīraṃ so’mṛtatvāya kalpate
The man whom these do not trouble nor pain, O lionhearted among men, the firm and wise who is equal in pleasure and suffering, makes himself apt for immortality.
Gītā 2·15Whoever is subject to grief and sorrow, a slave to the sensations and emotions, occupied by the touches of things transient cannot become fit for immortality. These things must be borne until they are conquered, till they can give no pain to the liberated man, till he is able to receive all the material happenings of the world whether joyful or sorrowful with a wise and calm equality, even as the tranquil eternal Spirit secret within us receives them. To be disturbed by sorrow and horror as Arjuna has been disturbed, to be deflected by them from the path that has to be travelled, to be overcome by self-pity and intolerance of sorrow and recoil from the unavoidable and trivial circumstance of the death of the body, this is un-Aryan ignorance. It is not the way of the Aryan climbing in calm strength towards the immortal life.