Do not be daunted by the enormity of the world's grief.Do justly, now.Love mercy, now.Walk humbly, now.You are not obligated to complete the work, but neither are you free to abandon it.
~ from The Talmud
As one contemplates, penetrating deeper and deeper into the nature of reality, one leaves the sensible world behind, transcends the subject/object mode of perception, and experiences one's soul.