Aswapati’s yoga is Sri Aurobindo’s own yoga. Savitri’s yoga is the yoga of the Divine Mother done in this terrestrial world . Aswapati as the representative of earth did sadhana till he got the darshan and assurance of Divine Mother granting him the boon of transforming this earthly life into a divine life. Sri Aurobindo himself did the sadhana for the whole creation and established the Divine Mother’s Grace and Love upon this earth.
Optimism fades with age, and some remain unaware of others' suffering, as seen in those who never experience hardship.